Lexus ES: Fail-safe Chart

Lexus ES (XZ10) Service Manual / Power Source & Network / Networking / Can Communication System (for Hv Model) / Fail-safe Chart

FAIL-SAFE CHART

FAIL-SAFE FUNCTION

(a) When communication fails in any of the CAN bus lines (communication lines), a fail-safe function(s) will operate. The fail-safe function that is specified for each system operates to prevent those systems from malfunctioning.

(b) The following table shows the effects on each system when communication is impossible. (For further details, see the pages for each system.)

Function	Control Master (Main ECU to determine controls)	System Related	Fail-safe Operation	Driver Detectable	DTC Detection (ECU that stored DTC)
Motor/Generator Control Controls the motor and generator by calculating the optimum voltage and current based on the requested torque value and the rotation angles of the motor and generator.	Inverter with converter assembly Hybrid vehicle control ECU	ECM Hybrid vehicle control ECU Brake booster with master cylinder assembly	When the brake booster with master cylinder assembly is not communicating: Normal driving possible (regeneration is not performed) When an ECU other than the brake booster with master cylinder assembly is not communicating: Normal driving possible	MIL illuminates. Master warning light illuminates.	U010087 U029387 U117087 (Inverter with converter assembly)
Anti-lock Brake System Control Helps prevent wheel lockup during sudden stops.	Brake booster with master cylinder assembly	Airbag ECU assembly	Control is permitted.	Brake warning light / yellow (minor malfunction) illuminates. ABS warning light illuminates. Slip indicator light illuminates. Brake hold operated indicator light blinks.	U0073 U0124 (Brake booster with master cylinder assembly)
Vehicle Stability Control / Traction Control /Vehicle Dynamics Integrated Management Suppresses vehicle instability, such as sliding sideways when cornering and wheel slippage when accelerating from rest. During vehicle dynamics integrated management control, vehicle integrated control which includes electronic steering control is performed.	Brake booster with master cylinder assembly	Inverter with converter assembly Airbag ECU assembly Steering sensor Hybrid vehicle control ECU	When the inverter with converter assembly or hybrid vehicle control ECU is not communicating: Control cannot be performed. When the airbag ECU assembly or steering sensor is not communicating: During control: When back-up control (vehicle behavior stabilization) is complete, braking returns to normal and further control is prohibited. Not during control: Control will not be started.	Brake warning light / yellow (minor malfunction) illuminates. ABS warning light illuminates. Slip indicator light illuminates. Brake hold operated indicator light blinks.	U0073 U0110 U0124 U0126 U0293 (Brake booster with master cylinder assembly)
Hybrid Vehicle Regenerative Brake Coordinate Control Attempts to increase the amount of energy recovered by coordinating control with the electronically controlled brake system.	Brake booster with master cylinder assembly	Inverter with converter assembly Certification ECU (smart key ECU assembly) Airbag ECU assembly Hybrid vehicle control ECU	When the airbag ECU assembly is not communicating: During control: When normal control is complete, hybrid vehicle regenerative brake coordinated control is prohibited. Not during control: Control will not be started. When an ECU other than the airbag ECU assembly is not communicating: Hybrid vehicle regenerative brake coordinated control is stopped immediately.	Brake warning light / yellow (minor malfunction) illuminates. ABS warning light illuminates. Slip indicator light illuminates. Brake hold operated indicator light blinks.	U0073 U0110 U0120 U0124 U0293 (Brake booster with master cylinder assembly)
Hill-start Assist Control Maintains the brake hydraulic pressure to the 4 wheels for 2 seconds with the brake pedal released when starting off on an uphill.	Brake booster with master cylinder assembly	Inverter with converter assembly Airbag ECU assembly Steering sensor Hybrid vehicle control ECU	During control: When normal control is complete, further control cannot be performed. Not during control: Control will not be started.	Brake warning light / yellow (minor malfunction) illuminates. ABS warning light illuminates. Slip indicator light illuminates. Brake hold operated indicator light blinks.	U0073 U0110 U0124 U0126 U0293 (Brake booster with master cylinder assembly)
Brake Hold Control Maintains the brake oil pressure when the vehicle is stopped.	Brake booster with master cylinder assembly	Airbag ECU assembly Brake actuator assembly Hybrid vehicle control ECU	When the airbag ECU assembly is not communicating: During control: When normal control is complete, brake hold control is prohibited. Not during control: Control will not be started. When an ECU other than the airbag ECU assembly is not communicating: During control: A message is displayed on the multi-information display and brake hold control is canceled when the brake pedal is depressed. Not during control: Control will not be started.	Brake warning light / red (malfunction) illuminates. Brake warning light / yellow (minor malfunction) illuminates. ABS warning light illuminates. Slip indicator light illuminates. Brake hold operated indicator light blinks.	U0073 U0124 U0128 U0293 (Brake booster with master cylinder assembly)
Occupant Classification System Acquires information about passengers for deployment of SRS components.	Airbag ECU assembly	Occupant detection ECU	SRS components do not deploy.	SRS warning light illuminates.	U0154 (Airbag ECU assembly)
Occupant Detection	Occupant detection ECU	Brake booster with master cylinder assembly Airbag ECU assembly	Sends signals indicating a malfunction to the airbag ECU assembly.	SRS warning light illuminates.	U0125 U0129 (Occupant detection ECU)
Vehicle Speed Display	Combination meter assembly	Brake booster with master cylinder assembly	Speedometer is controlled based on a default vehicle speed of 0 km/h (0 mph).	-	U012987 (Combination meter assembly)
Tachometer Display	Combination meter assembly	ECM	Needle of tachometer remains at 0 rpm.	-	U010087 (Combination meter assembly)
Meter Display Displays vehicle condition and controls indicator lights.	Combination meter assembly	ECM Brake booster with master cylinder assembly Rack and pinion power steering gear assembly Main body ECU (multiplex network body ECU) Airbag ECU assembly Radio receiver assembly Air conditioning amplifier assembly Headlight ECU sub-assembly LH Blind spot monitor sensor RH Millimeter wave radar sensor assembly Forward recognition camera Hybrid vehicle control ECU Certification ECU (smart key ECU assembly) Brake actuator assembly Clearance warning ECU assembly Steering sensor Option connector (bus buffer ECU)	Vehicle information is not displayed.	Abnormal light operation.	U010087 U012987 U013187 U014087 U015187 U016387 U016487 U018287 U023387 U023A87 U029387 U032787 U110487 U110687 U111087 U111287 U111787 U113387 (Combination meter assembly)
Air Conditioning Control Corrects engine speed, such as for idle up. Controls outlet air temperature, outlet mode change and airflow volume based on engine coolant temperature signal. Corrects engine coolant temperature map and changes compressor lock judgment value.	Air conditioning amplifier assembly	ECM Hybrid vehicle control ECU	Control is performed based on default coolant temperature of 80°C (176°F).	-	U0293 (Air conditioning amplifier assembly)
Simple Load Control Performs electric load control according to load control level signal.	Air conditioning amplifier assembly	Rack and pinion power steering gear assembly	While the power switch is on (IG), previous values are maintained (during a reset, there is no load control).	-	U0131 (Air conditioning amplifier assembly)
Panel Control Operation and panel switch indicator display control based on panel switch operation.	Air conditioning amplifier assembly	Radio receiver assembly	Air conditioning system operation state cannot be changed.	-	U0163 (Air conditioning amplifier assembly)
Panel Dimming Control Outputs dimming information to the A/C panel according to the display dimming information.	Air conditioning amplifier assembly	Main body ECU (multiplex network body ECU)	While the power switch is on (IG), previous values are maintained (during a reset, dimming control is performed).	-	-
Destination Determination Control Switches the A/C control pattern according to the destination information.	Air conditioning amplifier assembly	Main body ECU (multiplex network body ECU)	While the power switch is on (IG), previous values are maintained.	-	U0142 (Air conditioning amplifier assembly)
Ambient Temperature Correction Control Switches air conditioning system operation condition and corrects value of displayed ambient temperature according to vehicle speed signal.	Air conditioning amplifier assembly	Combination meter assembly	Control is performed based on default vehicle speed of 0 km/h (0 mph). Correction level for displayed ambient temperature declines. Correction level for outlet airflow declines.	-	U0155 (Air conditioning amplifier assembly)
Entry Function Entry lock/unlock, entry luggage compartment open. Warning Performs entry illumination (Interior illumination etc.). Displays messages to inform the driver that it is possible to start the hybrid control system.	Certification ECU (smart key ECU assembly)	ECM Main body ECU (multiplex network body ECU) Combination meter assembly	Warning functions (Key confinement, Key not in vehicle, Key reminder etc.) do not operate, Engine start enabled display does not operate, Key confinement prevention control does not operate. Entry lock/unlock or entry luggage compartment open does not operate. Entry illumination does not operate. Wrong entry warning is output.	-	U0100 U0142 U0155 (Certification ECU (smart key ECU assembly))
Wireless Function Operates the wireless lock/unlock functions, etc.	Certification ECU (smart key ECU assembly)	Main body ECU (multiplex network body ECU)	Wireless lock/unlock function and luggage compartment opener can be operated when the power switch is on (IG).	-	U0142 (Certification ECU (smart key ECU assembly))
Power Switch Backlighting Control Turns on/off power switch illumination linked with interior lights etc.	Certification ECU (smart key ECU assembly)	Main body ECU (multiplex network body ECU) Combination meter assembly	When the power switch backlight is not illuminated: Does not illuminate. When the power switch backlight is illuminated: Does not turn off.	-	U0142 (Certification ECU (smart key ECU assembly))
Security Indicator Display Function Displays the immobiliser security condition.	Certification ECU (smart key ECU assembly)	Main body ECU (multiplex network body ECU) Hybrid vehicle control ECU	Security condition cannot display normally (illuminates during security warning preparation/security warning). Entry and start warning cannot display normally. When the hybrid control system is activated, the message to show how to activate the hybrid control system does not turn off immediately. When the hybrid control system is activated, the low key battery warning is not displayed.	-	U0142 U0293 (Certification ECU (smart key ECU assembly))
Power Switch (Power Source Control) Changes the power source mode using the power switch signal as a trigger and requests the hybrid system to start when conditions are met.	Certification ECU (smart key ECU assembly)	Main body ECU (multiplex network body ECU) Combination meter assembly Hybrid vehicle control ECU Option connector (bus buffer ECU) Brake booster with master cylinder assembly	-	Hybrid system start operation message is not displayed. Power switch indicator blinks in amber.	U0140 U0155 U0293 U1117 (Certification ECU (smart key ECU assembly))
Blind Spot Monitor Control Detects vehicle in blind spot of adjacent lane and informs driver.	Blind spot monitor sensor RH	Airbag ECU assembly Steering sensor Brake booster with master cylinder assembly Main body ECU (multiplex network body ECU) Hybrid vehicle control ECU	-	Displays messages on the multi-information display.	U0125 U0126 U0129 U0142 U0293 (Blind spot monitor sensor RH)
Grille Shutter Opening or Closing Operation Control Opens or closes the grille shutter.	Swing grille actuator assembly	ECM Hybrid vehicle control ECU	Grille shutter opening operation is performed and further grille shutter operation is prohibited.	-	-
Automatic High Beam System Outputs information regarding the detection of the headlights and tail lights of other vehicles by the forward recognition camera to the main body ECU.	Forward recognition camera	Airbag ECU assembly Brake booster with master cylinder assembly Main body ECU (multiplex network body ECU) Millimeter wave radar sensor assembly Hybrid vehicle control ECU	Performs control based on the signals received before the malfunction occurred.	Displays messages on the multi-information display.	U012587 U012987 U014087 U023587 U029387 (Forward recognition camera)
Forward Recognition Camera System Sends shared calculations and detection results to each application inside the forward recognition camera.	Forward recognition camera	Airbag ECU assembly Steering sensor Brake booster with master cylinder assembly Main body ECU (multiplex network body ECU) Hybrid vehicle control ECU	Performs control based on the signals received before the malfunction occurred. Detection is disabled.	-	U012587 U012687 U012987 U014087 U029387 (Forward recognition camera)
Lane Tracing Assist System Helps center the vehicle in the lane using lane detection by the forward recognition camera.	Forward recognition camera	Airbag ECU assembly Steering sensor Brake booster with master cylinder assembly Rack and pinion power steering gear assembly Combination meter assembly Millimeter wave radar sensor assembly Hybrid vehicle control ECU	Control stops.	Displays messages on the multi-information display. LTA indicator (yellow) illuminates.	U012587 U012687 U012987 U013187 U015587 U023587 U029387 U030051 U030057 (Forward recognition camera)
Pre-collision System Performs pre-collision alarm control, pre-collision brake assist control and pre-collision brake control when an obstruction is detected.	Forward recognition camera	Airbag ECU assembly Steering sensor Brake booster with master cylinder assembly Millimeter wave radar sensor assembly Hybrid vehicle control ECU	Pre-collision alarm control, pre-collision brake assist control and pre-collision brake control are canceled.	Displays messages on the multi-information display. PCS warning light illuminates.	U012587 U012687 U012987 U023587 U023A87 U029387 U030051 U030057 U041881 (Forward recognition camera)
Road Sign Assist System Displays traffic signs on the multi-information display according to the traffic signs recognized by the forward recognition camera.	Forward recognition camera	Airbag ECU assembly Brake booster with master cylinder assembly Main body ECU (multiplex network body ECU) Combination meter assembly Hybrid vehicle control ECU	Control stops.	Displays messages on the multi-information display.	U012587 U012987 U014087 U015587 U029387 (Forward recognition camera)
Dynamic Radar Cruise Control System Using the millimeter wave radar sensor, yaw rate sensor, steering sensor, etc., detects the preceding vehicle and maintains a suitable distance by accelerating or braking, and maintains the set vehicle speed when no preceding vehicle is detected.	Forward recognition camera	Airbag ECU assembly Steering sensor Brake booster with master cylinder assembly Combination meter assembly Hybrid vehicle control ECU Brake actuator assembly	Control stops.	Displays messages on the multi-information display.	U012587 U012687 U012987 U015587 U029387 U110687 (Forward recognition camera)
Dynamic Radar Cruise Control System Accelerates or decelerates the vehicle to maintain the distance to the vehicle ahead.	Hybrid vehicle control ECU	Brake booster with master cylinder assembly Forward recognition camera	Control stops.	Displays messages on the multi-information display.	U010487 U012287 U029387 (Hybrid vehicle control ECU)
Pre-collision System Senses the preceding vehicle (measures distance) and outputs the result as target information (distance, side position, etc.).	Millimeter wave radar sensor assembly	Forward recognition camera	Recognition processing is stopped.	Displays messages on the multi-information display.	U010487 (Millimeter wave radar sensor assembly)
Power Steering Control Calculates assist current according to torque sensor value and vehicle speed and drives motor.	Rack and pinion power steering gear assembly	Brake booster with master cylinder assembly Hybrid vehicle control ECU	Assist force restricted. The steering feel becomes worse (compensation control using the steering angle is stopped). Zero point learning is not performed.	EPS warning light illuminates.	U0129 U0293 (Rack and pinion power steering gear assembly)
Assist Map Selection Selects proper assist map according to destination, engine type, etc.	Rack and pinion power steering gear assembly	Hybrid vehicle control ECU Brake booster with master cylinder assembly	Default map is used to assist because proper assist map cannot be selected. (Steering feel may be different.)	EPS warning light illuminates.	C1581 (Rack and pinion power steering gear assembly)
Lane Tracing Assist System Calculates the current to be used for assist according to the commanded torque value from the forward recognition camera and then operates the motor.	Rack and pinion power steering gear assembly	Steering sensor Brake booster with master cylinder assembly Forward recognition camera	Control stops.	-	U023A (Rack and pinion power steering gear assembly)
Auto Location Displays the location and pressure value of all tires on the combination meter assembly.	Tire pressure warning ECU and receiver	Brake booster with master cylinder assembly	Auto Location function is prohibited.	-	U0129 (Tire pressure warning ECU and receiver)
Ambient Temperature Data (Display) Corrects the distance measured by ultrasonic waves.	Clearance warning ECU assembly	Air conditioning amplifier assembly	-	-	U0164 (Clearance warning ECU assembly)
Display Dimmer Signal, Each Door Courtesy Switch Signal, Driver Seat Buckle Switch Signal and Parking Brake Switch Signal	Clearance warning ECU assembly	Main body ECU (multiplex network body ECU)	-	-	U0140 (Clearance warning ECU assembly)
Destination Determination Function Judges the destination and uses the information for an operation condition for the app. Judges the handle position and uses the information for an operation condition for the app.	Clearance warning ECU assembly	Main body ECU (multiplex network body ECU)	It operates according to previous EEPROM values when a communication stop occurs.	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0140 (Clearance warning ECU assembly)
RCTBSTAT Installation Direction of Master Module Master Radar Signal Reception Flag Slave Radar Signal Reception Flag Is used for RCTAB control.	Clearance warning ECU assembly	Blind spot monitor sensor RH	Only RCTAB control is stopped (ICS operates).	-	U0233 (Clearance warning ECU assembly)
Target ID Is used for RCTAB control.	Clearance warning ECU assembly	Blind spot monitor sensor RH Blind spot monitor sensor LH	Only RCTAB control is stopped (ICS operates).	-	U0232 U0233 (Clearance warning ECU assembly)
RCTA Warning Information Is used for RCTAB control.	Clearance warning ECU assembly	Blind spot monitor sensor RH Blind spot monitor sensor LH	Only RCTAB control is stopped (ICS operates).	-	U0232 U0233 (Clearance warning ECU assembly)
New Target Is used for RCTAB control.	Clearance warning ECU assembly	Blind spot monitor sensor RH Blind spot monitor sensor LH	Only RCTAB control is stopped (ICS operates).	-	U0232 U0233 (Clearance warning ECU assembly)
Extrapolation State Ghosting Possibility X Half Width Radar Reflection Cross Section Area Relative Distance X, Y Relative Speed VX, VY Is used for RCTAB control.	Clearance warning ECU assembly	Blind spot monitor sensor RH	Only RCTAB control is stopped (ICS operates).	-	U0232 U0233 (Clearance warning ECU assembly)
Shift Position Signal Is used as an operation condition for the app.	Clearance warning ECU assembly	Hybrid vehicle control ECU	Changes to an operation state which is used when the shift lever is in P.	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0293 (Clearance warning ECU assembly)
Engine Model Information Judges the engine/transmission model and switches the control constant table. Is used as an operation condition for the app. Determines whether the vehicle is 2WD or AWD and switch the steering parameter table. Is used as an operation condition for the IPA app.	Clearance warning ECU assembly	Hybrid vehicle control ECU	It operates according to previous EEPROM values when a communication stop occurs.	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0293 (Clearance warning ECU assembly)
Engine Control State Information Judges whether the engine is on or off. Is used as an operation condition for the app.	Clearance warning ECU assembly	ECM	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0100 (Clearance warning ECU assembly)
During CSR Request Operation G Is used as an operation condition for the app.	Clearance warning ECU assembly	Hybrid vehicle control ECU	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0293 (Clearance warning ECU assembly)
Cruise Control Information Is used as an operation condition for the app.	Clearance warning ECU assembly	Hybrid vehicle control ECU	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0293 (Clearance warning ECU assembly)
HV System Information Is used as an operation condition for the app.	Clearance warning ECU assembly	Hybrid vehicle control ECU	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0293 (Clearance warning ECU assembly)
Accelerator Opening Angle Is used as an operation condition for the app.	Clearance warning ECU assembly	Hybrid vehicle control ECU	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0293 (Clearance warning ECU assembly)
Clearance Sonar Main Switch Information Is used as an operation condition for the ICS. Is used as an operation condition for the clearance warning ECU assembly.	Clearance warning ECU assembly	Combination meter assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0155 (Clearance warning ECU assembly)
Clearance Sonar Buzzer Mute/Volume Change Is used as an operation condition for the clearance warning ECU assembly.	Clearance warning ECU assembly	Combination meter assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0155 (Clearance warning ECU assembly)
Data Continuity (Valid/Invalid) Flag +B Open Circuit Malfunction Sensor Malfunction Steering Angle Signal Sensor Internal Zero Point Memorization Invalid/Valid Steering Angle Sensor Internally Memorized Zero Point Value Steering sensor Calculated Value Is used as an operation condition for the app.	Clearance warning ECU assembly	Steering sensor	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0126 (Clearance warning ECU assembly)
Discontinuous Generation Display Flag VGRS Setting Availability Information Is used as an operation condition for the app.	Clearance warning ECU assembly	Steering sensor	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0126 (Clearance warning ECU assembly)
Wheel Speed Information The wheel speed signal from each wheel (after 1/2 filter) is used to calculate the vehicle speed.	Clearance warning ECU assembly	Brake booster with master cylinder assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0129 (Clearance warning ECU assembly)
Wheel Speed Sensor State Information, Wheel Speed Calculated Value Is used as an operation condition for the app.	Clearance warning ECU assembly	Brake booster with master cylinder assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0129 (Clearance warning ECU assembly)
Master Cylinder Pressure Malfunction Flag Master Cylinder Pressure Invalid Flag Master Cylinder Pressure BA Fail Signal STP Switch Signal During VSC Control STP Switch Open Circuit Signal During ABS Control Is used as an operation condition for the app.	Clearance warning ECU assembly	Brake booster with master cylinder assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0129 (Clearance warning ECU assembly)
TRC Operating Flag Is used as an operation condition for the app.	Clearance warning ECU assembly	Brake booster with master cylinder assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0129 (Clearance warning ECU assembly)
Brake Control State Signal Is used as an operation condition for the app.	Clearance warning ECU assembly	Brake booster with master cylinder assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0129 (Clearance warning ECU assembly)
Yaw Rate Sensor State Signal Is used as an operation condition for the app.	Clearance warning ECU assembly	Brake booster with master cylinder assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0129 (Clearance warning ECU assembly)
Speed Information Signal for Each Wheel Calculates the amount of movement.	Clearance warning ECU assembly	Brake booster with master cylinder assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0129 (Clearance warning ECU assembly)
VSC OFF, TRC OFF Indicator Is used as an operation condition for the app.	Clearance warning ECU assembly	Brake booster with master cylinder assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0129 (Clearance warning ECU assembly)
Yaw Rate Sensor State Signal Is used as an operation condition for the app.	Clearance warning ECU assembly	Airbag ECU assembly	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	App stops operating (displays a warning message in the combination meter and sounds the buzzer).	U0124 (Clearance warning ECU assembly)
Speedometer Displays the current vehicle speed.	Meter mirror sub-assembly	Combination meter assembly	Vehicle speed displayed value: Displays 0. Vehicle speed unit: Is not displayed.	-	U015587 (Meter mirror sub-assembly)
Display Brightness Adjustment Adjusts the brightness of the display.	Meter mirror sub-assembly	Combination meter assembly	Maintains the latest state.	-	U015587 (Meter mirror sub-assembly)
Display Position Adjustment Adjusts the position of the display.	Meter mirror sub-assembly	Combination meter assembly	Maintains the latest state.	-	U015587 (Meter mirror sub-assembly)
Display Rotation Adjustment Adjusts the rotation of the display.	Meter mirror sub-assembly	Combination meter assembly	Displays the display using the default rotation.	-	U015587 (Meter mirror sub-assembly)
Hybrid System Indicator	Meter mirror sub-assembly	Hybrid vehicle control ECU	Operates under default control.	-	U029387 (Meter mirror sub-assembly)
Road Sign Assist System Displays traffic signs (such as speed limit signs) using the traffic sign signal sent from the forward recognition camera.	Meter mirror sub-assembly	Forward recognition camera	Not displayed.	-	U023A87 (Meter mirror sub-assembly)
Ambient Temperature/Road Surface Ice Display Displays the road surface ice display mark and ambient temperature on the headup display using the ambient temperature signal sent from the air conditioning amplifier assembly.	Meter mirror sub-assembly	Air conditioning amplifier assembly	An error value is displayed.	-	U016487 (Meter mirror sub-assembly)
Pre-collision System Displays warning notifications.	Meter mirror sub-assembly	Forward recognition camera	Not displayed.	-	U023A87 (Meter mirror sub-assembly)
Dynamic Radar Cruise Control System Displays an icon representing the preceding vehicle, set vehicle-to-vehicle distance and set speed.	Meter mirror sub-assembly	Hybrid vehicle control ECU	Not displayed.	-	U029387 (Meter mirror sub-assembly)
Lane Departure Alert System Displays the left and right road marking icons, steering icon and rest reminder icon.	Meter mirror sub-assembly	Forward recognition camera	Not displayed.	-	U023A87 (Meter mirror sub-assembly)
Lane Trace Control System Displays the advanced driving support display matched with the shape of the actual curve (LDA white lines, LTC self-confident wall, ACC preceding vehicle, set vehicle distance. etc.) using the curve number signals sent from the forward recognition camera.	Meter mirror sub-assembly	Forward recognition camera	Not displayed.	-	U023A87 (Meter mirror sub-assembly)
Parking Support Brake System Displays the operation status of the parking support brake system.	Meter mirror sub-assembly	Clearance warning ECU assembly	Not displayed.	-	U111087 (Meter mirror sub-assembly)
Information Hides information icons and messages.	Meter mirror sub-assembly	Combination meter assembly	Not displayed.	-	U015587 (Meter mirror sub-assembly)
Display Customization Switches the display content between on and off.	Meter mirror sub-assembly	Combination meter assembly	Not displayed.	-	U015587 (Meter mirror sub-assembly)
Lighting On/Off Controls the illumination of the low beams, high beams, daytime running lights and clearance lights.	Headlight ECU sub-assembly LH Headlight ECU sub-assembly RH	Main body ECU (multiplex network body ECU)	High beams: Off (maintains previous value for 3 seconds after stopped). AFS: Operates with the beam axis facing forward. Adaptive high beam system: Stopped (maintains low beam). Bad weather: Cornering light turns off and leveling normal control stops.	Displays messages on the multi-information display.	U0142 (Headlight ECU sub-assembly LH) (Headlight ECU sub-assembly RH)
Cornering Light Control Judges if the cornering lights are on or off.	Headlight ECU sub-assembly LH Headlight ECU sub-assembly RH	Combination meter assembly	Stops cornering light control (cornering light turns off).	-	U0155 (Headlight ECU sub-assembly LH)
Door Lock Controls key linked and automatic door lock/unlock function, key confinement prevention function, etc.	Main body ECU (multiplex network body ECU)	Airbag ECU assembly	Key linked door lock/unlock function is performed even when the power switch is on (IG) and the driver seatbelt is fastened.	-	U0151 (Main body ECU (multiplex network body ECU))
Shift-linked Automatic Door Lock Function Automatically locks all of the doors when the shift lever is moved to select another shift state with park (P) selected.	Main body ECU (multiplex network body ECU)	Hybrid vehicle control ECU	All of the doors are not locked automatically when all of the following conditions are met. The power switch is on (IG), the engine is running and all of the doors are closed. With park (P) selected, the shift lever is moved to select another shift state.	-	U0101 (Main body ECU (multiplex network body ECU))
Shift-linked Automatic Door Unlock Function Automatically unlocks all of the doors when the P position switch (transmission shift main switch) is pushed with a shift state other than park (P) selected.	Main body ECU (multiplex network body ECU)	Hybrid vehicle control ECU Combination meter assembly	All of the doors are not locked automatically when all of the following conditions are met. The power switch is on (IG), the engine is running and all of the doors are closed. With park (P) selected, the shift lever is moved to select another shift state.	-	U0101 U0155 (Main body ECU (multiplex network body ECU))
Speed-sensitive Automatic Door Lock Function Automatically locks all of the doors when it is determined that the vehicle is being driven.	Main body ECU (multiplex network body ECU)	Combination meter assembly	All of the doors are not locked automatically when all of the following conditions are met. The power switch is on (IG) and the engine is running. Vehicle speed is higher than approximately 20 km/h (12 mph).	-	U0155 (Main body ECU (multiplex network body ECU))
Manual Unlock Prohibition Function When it is determined that the vehicle is parked and the doors are locked or closed after the driver has left the vehicle, unlocking the vehicle using the door control switch is prohibited.	Main body ECU (multiplex network body ECU)	ECM Hybrid vehicle control ECU	The manual unlock prohibition cannot be canceled when the hybrid control system has been started. The manual unlock prohibition cannot be canceled when the vehicle is in the ready state.	-	U0100 U0293 (Main body ECU (multiplex network body ECU))
Power Door Lock Control System Customize Setting Enables or disables each power door lock or unlock function in accordance with user operation.	Main body ECU (multiplex network body ECU)	Hybrid vehicle control ECU	Automatic lock/unlock cannot be changed.	-	U0101 (Main body ECU (multiplex network body ECU))
Wireless Function Locks and unlocks doors, etc. via remote operation.	Main body ECU (multiplex network body ECU)	Certification ECU (smart key ECU assembly) Option connector (bus buffer ECU)	The doors cannot be locked or unlocked via remote operation.	-	U1117 (Main body ECU (multiplex network body ECU))
Entry Lock/Unlock Locks or unlocks doors using the entry lock/unlock operation.	Main body ECU (multiplex network body ECU)	Certification ECU (smart key ECU assembly) Option connector (bus buffer ECU)	The doors cannot be locked or unlocked via remote operation.	-	U0327 U1117 (Main body ECU (multiplex network body ECU))
Wireless Door Lock Buzzer Sounds when the doors are locked/unlocked by wireless operation.	Main body ECU (multiplex network body ECU)	Certification ECU (smart key ECU assembly)	The wireless door lock buzzer does not sound when the doors are locked/unlocked by wireless operation.	-	U0327 (Main body ECU (multiplex network body ECU))
Luggage Compartment Door Opener System Unlocks and unlatches the luggage compartment door when the luggage electrical key switch is pushed and held with the luggage compartment door locked.	Main body ECU (multiplex network body ECU)	Certification ECU (smart key ECU assembly)	When the luggage electrical key switch is pushed and held with the luggage compartment door locked, the luggage compartment door does not unlatch.	-	U0327 (Main body ECU (multiplex network body ECU))
Luggage Compartment Door Opener System Unlatches the luggage compartment door when the luggage door opening switch assembly is pushed.	Main body ECU (multiplex network body ECU)	Hybrid vehicle control ECU Combination meter assembly	When the luggage door opening switch assembly is pushed and held, the luggage compartment door does not unlatch.	-	U0101 U0155 (Main body ECU (multiplex network body ECU))
Dome Lights Illuminates when approaching any of the doors while holding an entry key.	Main body ECU (multiplex network body ECU)	Certification ECU (smart key ECU assembly)	The interior lights remain off when the electrical key transmitter sub-assembly is close to any of the doors.	-	U0327 (Main body ECU (multiplex network body ECU))
Dimmer Controlled Illumination Dims the illumination of the instrument panel ambient illumination lights or ambient illumination lights when the vehicle starts driving.	Main body ECU (multiplex network body ECU)	Hybrid vehicle control ECU	The interior lights remain on without being dimmed when the shift state is park (P) and a shift state other than park (P) is selected.	-	U0101 (Main body ECU (multiplex network body ECU))
Alarm Function In the armed state, the alarm function judges break-in according to changes in door courtesy status and the alarm sounds.	Main body ECU (multiplex network body ECU)	Hybrid vehicle control ECU Certification ECU (smart key ECU assembly) Option connector (bus buffer ECU) ECM	After the vehicle is locked using wireless operation, pressing the push start switch before the alarm is set does not unset the alarm and, after a specified period of time, the alarm will be set. While in the alarm sounding state, the alarm is not canceled when a registered smart key is certified and the push start switch is pressed. When the alarm is sounding, the alarm is not canceled when the engine has been started.	-	U0100 U0120 U1117 (Main body ECU (multiplex network body ECU))
Auxiliary Battery Saving Function When it is determined that the vehicle is parked, stops sending illumination request signals and cuts power to the interior lights to avoid a depleted battery.	Main body ECU (multiplex network body ECU)	Certification ECU (smart key ECU assembly)	When the auxiliary battery is in battery saving mode and any of the doors are approached while holding an entry key, the auxiliary battery saving function is not canceled and the interior illuminations do not illuminate.	-	U0327 (Main body ECU (multiplex network body ECU))
Interior Light Auto Cut Function Turns off the interior lights automatically when the driver leaves the vehicle with the interior lights illuminated.	Main body ECU (multiplex network body ECU)	Certification ECU (smart key ECU assembly)	The headlights do not turn off when the lock switch of the electrical key transmitter sub-assembly is pressed with all of the doors locked when the interior light auto cut function is being performed.	-	-
Headlight System Malfunction Warning Display Detects an open circuit or a malfunctioning ECU in the LED headlight system and informs the driver of the malfunction.	Main body ECU (multiplex network body ECU)	ECM Hybrid vehicle control ECU	When an LED headlight malfunction is detected, the LED headlight warning display is not displayed when the low beam headlights are turned on when the hybrid control system has been started. When an LED headlight malfunction is detected, the LED headlight warning display is not displayed when the low beam headlights are turned on when the power switch is turned on (READY).	-	U0100 U0293 (Main body ECU (multiplex network body ECU))
Meter Illumination Auto Dimmer Determines whether it is daytime or nighttime based on the automatic light control sensor signals and, when it is determined that it is nighttime or dark, dims the meter illumination according to interior light illuminations and tail cancel switch state.	Main body ECU (multiplex network body ECU)	Combination meter assembly	The meter illumination is dimmed when the tail cancel switch is on.	-	U0155 (Main body ECU (multiplex network body ECU))
Key Off Operation Permits the power window to operate for 43 seconds after the power switch is turned off.	Main body ECU (multiplex network body ECU)	ECM Hybrid vehicle control ECU	The engine speed is set to 0.	-	U0100 U0293 (Main body ECU (multiplex network body ECU))
Headlights Left Off Warning Suggests that the driver turns the headlights on when the headlights are not illuminated while driving at night.	Main body ECU (multiplex network body ECU)	Combination meter assembly	The suggestion that the driver turns the headlights on is not displayed on the multi-information display in the combination meter assembly when the headlight dimmer switch is OFF or TAIL while driving at night.	-	U0155 (Main body ECU (multiplex network body ECU))
Automatic High Beam System Controls the high beam automatically when the forward recognition camera detects a preceding vehicle or an oncoming vehicle.	Main body ECU (multiplex network body ECU)	Headlight ECU sub-assembly LH Forward recognition camera	Automatic high beam system does not operate.	Displays messages on the multi-information display.	U0182 U023A (Main body ECU (multiplex network body ECU))
Air Conditioning Control Controls each function of the air conditioning system, such as the air temperature, to control the temperature and air inlets according to the operation of the touch screen on the navigation display.	Radio receiver assembly	Air conditioning amplifier assembly	Air conditioning system indicators turn off. If set temperature is shown on multi-information display or multi-display, set temperature display turns off.	Displays messages on the multi-display assembly display.	U0073 U0164 (Radio receiver assembly)
Intuitive Parking Assist System Setting/Notification Controls the settings for the clearance sonar screen notifications which are set by touch switch operation, displays the sonar status and plays voice warnings.	Radio receiver assembly	Hybrid vehicle control ECU Clearance warning ECU assembly	Transitions to the previous screen.	-	U0073 U1110 (Radio receiver assembly)
Fuel Consumption Display Displays graph of fuel consumption per minute and history of total fuel consumption.	Radio receiver assembly	ECM Brake booster with master cylinder assembly Hybrid vehicle control ECU Combination meter assembly	The fuel consumption calculation is not performed. The existing data is cleared and the per-minute fuel consumption calculation resumes after normal data is received again. If the fuel consumption display scale signal (FC_SCL) or drive monitor unit signal (UNIT_6) cannot be received from the combination meter assembly, the display shows the last known value. If the following data cannot be received from the combination meter assembly, nothing is displayed on the fuel consumption display. If there is a communication error, nothing is displayed on the fuel consumption display until communication returns to normal. Current fuel consumption/Average speed (after start)/Elapsed time (after start)/Drivable distance If the following data cannot be received from the combination meter assembly, the previous data is displayed. If there is no previous data, nothing is displayed on the fuel consumption display. If there is a communication error, the last known data is displayed on the fuel consumption display until communication returns to normal. section average fuel consumption (latest graph)	-	U0100 U0129 U0155 U0293 (Radio receiver assembly)
HV Energy Flow Display Creates energy flow screen which indicates regeneration status and drive force transmission status.	Radio receiver assembly	Hybrid vehicle control ECU	Energy flow is not displayed (only the energy flow route is displayed). The last valid SOC of the HV battery is displayed.	-	U0073 U0293 (Radio receiver assembly)
Destination Identification Identifies destination based on destination and destination package information, and selects the time zone and language used for the display.	Radio receiver assembly	Main body ECU (multiplex network body ECU)	Determines the destination according to the last received value and operates accordingly (if there is no last received value, the system operates using the default value).	Time zone and language selection screen are different from actual destination.	U0073 U0140 (Radio receiver assembly)
Vehicle Customize Function Changes the behavior and control parameters of various functions (illumination lighting time, etc.) according to the user operation via the screen.	Radio receiver assembly	Main body ECU (multiplex network body ECU) Air conditioning amplifier assembly Certification ECU (smart key ECU assembly)	When an application that uses phase 4 remote communication is activated (customization/remote diagnosis), the process will be performed regardless of main body ECU (multiplex network body ECU) remote communication permit/prohibit state. The enter button is grayed out and selection is not possible. Performs customization according to diagnostic communication Retries 3 times	-	U0073 (Radio receiver assembly)
Rear View Monitor System Displays images from the rear view camera.	Radio receiver assembly	Hybrid vehicle control ECU	Screen does not change to the camera screen.	-	-
Back Guide Monitor Function Displays the image from the rear view camera with the predicted path guide lines, vehicle width extension guide lines and distance guide lines overlaid when reversing.	Radio receiver assembly	Hybrid vehicle control ECU Rear television camera assembly	When in camera diagnostic mode, transitions to the multi-media screen and the multi-media diagnosis screen starts. When DTC C1610 is stored, current DTC C1610 is cleared. Sends reactive force setting completion notifications and pointer coordinates as a setting signal for each error when it occurs. Treats the camera screen pattern as a setting signal for each error when it occurs, and performs the reactive force setting when the camera image is displayed. When in camera mode, transitions to the multi-media screen (the camera screen is displayed).	-	U0073 U0265 (Radio receiver assembly)
Meter-linked Function Changes display based on customization information set through the meter. Outputs the customization information set in the system.	Radio receiver assembly	Combination meter assembly	Language, unit and accent color linking: Maintains the last valid settings. GS search: Performs control without confirming if there is a GS search request. Uses the last valid settings. Grays out the settings to prevent them from being changed when displayed.	-	U0073 U0155 (Radio receiver assembly)
Information Sound Adjustment Function Receives flags from the millimeter wave radar sensor assembly to operate the alarm, and limits or mutes multimedia audio while the alarm is in operation.	Radio receiver assembly	Forward recognition camera	Audio mute is canceled.	-	U0073 (Radio receiver assembly)
Back Guide Monitor Function Monitors the shift position signal, steering angle signal and vehicle speed, and displays the predicted path guide lines on the screen based on the steering angle when reversing.	Rear television camera assembly	ECM Steering sensor Main body ECU (multiplex network body ECU) Radio receiver assembly Blind spot monitor sensor RH Clearance warning ECU assembly Hybrid vehicle control ECU	Predicted path guide lines are not displayed. All guide lines, the clearance sonar icon and rear cross traffic alert icon are not displayed. Switches on the screen are grayed out.	"!" is displayed on the camera screen.	U0100 U0126 U0140 U0163 U0233 U0293 U1000 U1110 (Rear television camera assembly)
Rear Camera Detection Function Monitors the shift position signal and vehicle speed and displays a warning message on the screen and sounds a buzzer to warn the driver when a pedestrian is detected in the image of the camera when reversing.	Rear television camera assembly	ECM Steering sensor Brake booster with master cylinder assembly Main body ECU (multiplex network body ECU) Blind spot monitor sensor RH Parking assist ECU Radio receiver assembly Hybrid vehicle control ECU	Control stops.	-	U0100 U0126 U0129 U0140 U0233 U023B U0293 U1000 (Rear television camera assembly)
Static Parking Brake Engages and releases the parking brake electronically according to switch operation when the vehicle is stopped.	Brake actuator assembly	Brake booster with master cylinder assembly	The vehicle cannot be determined as stopped.	Parking brake warning light illuminates.	U0073 U0129 (Brake actuator assembly)
Dynamic Parking Brake Operates the parking brake to decelerate the vehicle while the vehicle is being driven. Operates the parking brake when the switch is being operated and releases it when the switch is released.	Brake actuator assembly	Brake booster with master cylinder assembly	The vehicle cannot be determined as stopped.	Parking brake warning light illuminates.	U0073 U0129 (Brake actuator assembly)
Shift-linked Function Engages the parking brake automatically when the shift lever is moved to P and releases the parking brake when the shift lever is moved to D, N or R.	Brake actuator assembly	ECM Airbag ECU assembly Brake booster with master cylinder assembly Hybrid vehicle control ECU	Shift-linked function is prohibited.	Parking brake warning light illuminates.	U0073 U0100 U0124 U0129 U0293 (Brake actuator assembly)
Brake Hold Function Engages the parking brake automatically when the shift lever is moved to P and releases the parking brake when the shift lever is moved to D, N or R.	Brake actuator assembly	Brake booster with master cylinder assembly	Brake hold function is prohibited.	Parking brake warning light illuminates.	U0073 U0129 (Brake actuator assembly)
Panoramic View Monitor Displays the bird's-eye view, back view, side view and front view of the vehicle on the multi-information display. Displays guide lines on the panoramic view monitor screen. Displays the detection area of the clearance sonar sensor. Displays the detection status of the rear cross traffic alert. Displays the detection status of each camera.	Parking assist ECU	Hybrid vehicle control ECU Steering sensor Brake booster with master cylinder assembly Main body ECU (multiplex network body ECU) Radio receiver assembly Blind spot monitor sensor RH Rear television camera assembly Clearance warning ECU assembly	Predicted path guide lines are not displayed. All guide lines, the clearance sonar icon and rear cross traffic alert icon are not displayed. Switches on the screen are grayed out.	"!" is displayed on the camera screen. Displays messages on the multi-information display.	U0073 U0100 U0126 U0129 U0140 U0163 U0233 U0265 U0293 U1000 U1110 (Parking assist ECU)
Auto Away Function Moves the steering wheel to the most retracted position and tilts to the top if the system detects the driver side seat belt is unfastened and the power switch is turned off.	Multiplex tilt and telescopic ECU	Main body ECU (multiplex network body ECU) Combination meter assembly	Control is suspended (manual operation is still possible).	-	U014287 U015587 (Multiplex tilt and telescopic ECU)
Auto Return Function Returns the steering wheel to the position before the auto-away operation was performed (multiplex tilt and telescopic ECU memorized position) when the power switch is turned on (IG) or the driver side seat belt is fastened.)	Multiplex tilt and telescopic ECU	Main body ECU (multiplex network body ECU) Combination meter assembly	Control is suspended (manual operation is still possible).	-	U014287 U015587 (Multiplex tilt and telescopic ECU)
Memory Control Memorizes or recalls the steering wheel position in accordance with the operation of the memory switch.	Multiplex tilt and telescopic ECU	Main body ECU (multiplex network body ECU) Combination meter assembly Position control ECU assembly LH	Steering wheel does not return to memorized position.	-	U014287 U015587 U020887 (Multiplex tilt and telescopic ECU)
Mirror Operation Control Controls the operation of the outer mirrors based on signals such as the mirror switch signal from the main body ECU (multiplex network body ECU).	Outer mirror control ECU assembly LH Outer mirror control ECU assembly RH	Main body ECU (multiplex network body ECU)	Manual mirror operation is prohibited.	-	U0142 (Outer mirror control ECU assembly LH) (Outer mirror control ECU assembly RH)
Mirror Heaters Controls the operation of the outer mirror heaters based on defogger switch information from the main body ECU (multiplex network body ECU).	Outer mirror control ECU assembly LH Outer mirror control ECU assembly RH	Main body ECU (multiplex network body ECU) Air conditioning amplifier assembly	Mirror heaters do not operate.	-	U0142 (Outer mirror control ECU assembly LH) (Outer mirror control ECU assembly RH)
Mirror Retract/Return Operation Controls retract/return operation of the outer mirrors based on signals such as mirror switch signal from main body ECU (multiplex network body ECU).	Outer mirror control ECU assembly LH Outer mirror control ECU assembly RH	Main body ECU (multiplex network body ECU)	Mirrors cannot be retracted or returned.	-	-
Reverse-shift Linked Door Mirror Operation Controls the reverse operation of the outer mirrors based on reverse request information from the main body ECU (multiplex network body ECU).	Outer mirror control ECU assembly LH Outer mirror control ECU assembly RH	Main body ECU (multiplex network body ECU)	Reverse-shift linked door mirror function does not operate.	-	-
Mirror Surface Position Memory and Recall Memorizes the mirror surface positions based on the memory request signal from the main body ECU (multiplex network body ECU) and adjusts the outer mirror surfaces to the memorized positions.	Outer mirror control ECU assembly LH Outer mirror control ECU assembly RH	Main body ECU (multiplex network body ECU)	Mirror surface position cannot be memorized or recalled.	-	-
Active Noise Control System Obtains vehicle information signals and reduces the booming noise from the engine.	Stereo component equalizer assembly	ECM Brake booster with master cylinder assembly Main body ECU (multiplex network body ECU) Air conditioning amplifier assembly Hybrid vehicle control ECU	The effective volume of active noise control system is controlled or the function is stopped.	-	U010087 U012987 U014087 U016487 U029387 U115187 (Stereo component equalizer assembly)
Power Trunk Lid Automatic Open/Close Function Automatically opens the trunk according to the trunk opener switch and operation conditions (power switch state, shift position, stop light, parking brake state and vehicle speed.) Automatically closes the power trunk using the power trunk lid close switch.	Luggage closer motor assembly	Hybrid vehicle control ECU Brake booster with master cylinder assembly Main body ECU (multiplex network body ECU) Combination meter assembly Certification ECU (smart key ECU assembly) Option connector (bus buffer ECU)	The automatic trunk open function is not operated. The automatic trunk close function cannot reverse operation during operation.	-	U0101 U0122 U0142 U0155 U0327 U1117 (Luggage closer motor assembly)
Luggage Compartment Closer Function Completely closes the trunk when it is ajar.	Luggage closer motor assembly	Hybrid vehicle control ECU Brake booster with master cylinder assembly Main body ECU (multiplex network body ECU) Combination meter assembly Certification ECU (smart key ECU assembly) Option connector (bus buffer ECU)	The function cannot reverse operation during the closer operation.	-	U0101 U0122 U0142 U0155 U0327 U1117 (Luggage closer motor assembly)
Vehicle Proximity Notification System System which warns pedestrians, cyclists, etc. of the approaching EV/HEV vehicle by outputting an audible sound depending on various inputs such as vehicle speed, etc.	Vehicle approaching speaker controller	Brake booster with master cylinder assembly Main body ECU (multiplex network body ECU) Hybrid vehicle control ECU	Controlled based on settings at vehicle speed of 0 km/h (fixed volume and no frequency shift). Maintains last known setting. Vehicle approaching sound suspended.	-	U0129 U0140 U0293 (Vehicle approaching speaker controller)

SEE MORE:

On-vehicle Inspection

ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT PCV VALVE (VENTILATION VALVE SUB-ASSEMBLY) (a) Check the PCV valve (ventilation valve sub-assembly) operation. (1) Start the engine. (2) Slide the clip and disconnect the No. 2 ventilation hose from the air cleaner hose assembly. (3) Check that air is su

Under Hood

UNDER HOOD GENERAL NOTES Maintenance requirements vary depending on country. Check the maintenance schedule in the owner's manual. Following the maintenance schedule is mandatory. Determine the appropriate time to service the vehicle using either miles driven or time (mo

Lexus ES: Fail-safe Chart

READ NEXT:

Dtc Check / Clear

Diagnosis System

Terminals Of Ecu

SEE MORE:

On-vehicle Inspection

Under Hood