Lexus ES manuals

Lexus ES: Fail-safe Chart

FAIL-SAFE CHART

FAIL-SAFE FUNCTION

(a) When a malfunction occurs in the lane control system, a message will be displayed on the multi-information display and, depending on the malfunction, functions of the lane control system will be disabled.

Warning Message

Cause

Fail-safe Operation

Conditions to Return to Normal Condition

Lane Departure Alert Function

Steering Assist Function

Lane Centering Function

Vehicle Sway Warning Function

X: Control is suspended

LTA Malfunction Visit Your Dealer

Lane control system is malfunctioning

HINT:

Click here

X

X

X

X

After system returns to normal, engine switch is turned off and then to on (IG) or LTA main switch is turned off and then to on.

Front Camera Unavailable

Forward recognition camera temperature out of operating range

X

X

X

X

Forward recognition camera temperature returns to normal

Abnormal forward recognition camera voltage

X

X

X

X

Forward recognition camera voltage returns to normal

Forward recognition camera is temporarily unavailable (forward recognition camera recognition stopped)

X

X

X

X

The conditions which prevent the forward recognition camera from performing recognition return to normal.

Front Camera Unavailable See Owner's Manual

  • Area of windshield glass in front of forward recognition camera is dirty or fogged up
  • Lens of forward recognition camera is dirty or fogged up

X

X

X

X

Forward recognition camera or area of windshield glass in front of forward recognition camera is cleaned

LTA Unavailable

Sensor other than forward recognition camera sensor is temporarily unavailable

HINT:

Click here

X

X

X

X

Temporarily unavailable sensor becomes available

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 Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a pa

 Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART Lane Control System DTC No. Detection Item Link C1A7496 Steering Vibrator Component Internal Failure U010087 Lost Communication with ECM/PCM "A" M

 Steering Vibrator Component Internal Failure (C1A7496)

DESCRIPTION If the forward recognition camera receives a steering vibration ECU malfunction signal, DTC C1A7496 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C1A7

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 Disassembly

DISASSEMBLY PROCEDURE 1. REMOVE ROOF WIND DEFLECTOR PANEL SUB-ASSEMBLY (a) Disengage the 3 claws and 2 pins. (b) Move the roof wind deflector panel sub-assembly in the direction indicated by the arrow (1) shown in the illustration. Remove in this Direction (1) Remove in this Direction

 Terminals Of Ecu

TERMINALS OF ECU CHECK 4WD ECU ASSEMBLY (a) Measure the voltage and resistance of the connector. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition G131-6 (CANH) - G131-5 (CANL) G - W HIGH-level CAN bus wire - LOW-level CAN bus wire Cable disc

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