Lexus ES manuals

Lexus ES: System Description

SYSTEM DESCRIPTION

POWER MIRROR CONTROL SYSTEM (w/ Memory) DESCRIPTION

(a) This system has the following functions: electrical remote control mirror function, memory and reactivation function, power retract mirror function, auto power retract mirror function, mirror heater function and automatic glare-resistant EC mirror function.

FUNCTION OF MAIN COMPONENT

Component

Function

Outer rear view mirror assembly

Vertical mirror motor

Receives a signal from the outer mirror control ECU assembly and adjusts the mirror surface position vertically.

Horizontal mirror motor

Receives a signal from the outer mirror control ECU assembly and adjusts the mirror surface position horizontally.

Power retract mirror motor

Receives a signal from the outer mirror control ECU assembly, and retracts and returns the outer rear view mirror assemblies.

Mirror position sensor

Detects the mirror surface position. This information is sent to the outer mirror control ECU assembly.

Mirror heater

Receives a signal from the outer mirror control ECU assembly and operates the mirror heaters.

EC mirror cell

Varies the reflection rate of the mirror through the function of EC elements.

Outer mirror switch assembly

Mirror select switch

Consists of individual R and L switches. One must be selected to operate the mirror adjust switch.

Mirror adjust switch

Mirror R and L signals are sent to each outer mirror control ECU assembly from the mirror select switch.

After turning the mirror select switch R or L switch, on the right, left, up and down control switches can be operated to change the angle of the mirror surface.

Retractable outer mirror switch

  • Retracts and returns the outer rear view mirror assemblies. Mirror retract and return signals are sent to each outer mirror control ECU assembly from the main body ECU (multiplex network body ECU).
  • Sends the mirror auto retract signal to the main body ECU (multiplex network body ECU) via LIN communication.

Seat memory switch

When the seat memory M1, M2 or M3 switch is pressed while the SET switch is being pressed, or the M1, M2 or M3 switch is pressed within 3 seconds of the SET switch being pressed, a signal is sent to the outer mirror control ECU assembly (driver door), which records the mirror surface position.

When the seat memory switch is pressed, a signal is sent to the outer mirror control ECU assembly (driver door) and sent to the main body ECU (multiplex network body ECU), which changes the mirror surface position to the memorized position.

Outer mirror control ECU assembly

Operates each mirror motor based on signals from the mirror select switch, mirror adjust switch and retractable outer mirror switch.

Based on information from the mirror position sensors, 3 different mirror surface positions can be memorized. By operating a seat memory switch, the mirror surface moves to the memorized position.

SYSTEM OPERATION

(a) The power mirror control system (w/ Memory) has the following features.

Function

Outline

Electrical remote control mirror function

When the outer mirror switch assembly is operated, this function moves the mirror surface vertically or horizontally to enable the driver to attain an optimal mirror angle. Pressing the mirror select switch R switch operates the right side mirror, and pressing the mirror select switch L switch operates the left side mirror.

Memory and reactivation function

Stores the adjusted mirror surface position in the outer mirror control ECU assembly.

Power retract mirror function

Retracts and returns the outer rear view mirror assemblies when the retractable outer mirror switch is pressed.

Auto power retract mirror function

Retracts and returns each outer rear view mirror assembly together with the following operations while the retractable outer mirror switch is in auto position.

  • Manual lock/unlock
  • Key-linked lock/unlock
  • Wireless door lock/unlock
  • Wireless 30 seconds auto lock
  • Entry lock/unlock
  • Smart 30 seconds auto lock

Reverse shift-linked function

Directs the mirror surface downward to improve visibility when driving in reverse and all of the following conditions are met:

  • The power switch is on (IG).
  • Shift lever is moved to R.
  • The mirror select switch R or L switch is on.

Reverse shift-linked mirror position memorization function

Memorizes the mirror surface position when the outer mirror switch is operated while the reverse shift-linked function is operating (can be enabled or disabled using the customize function).

Mirror heater function

Turns on the mirror heaters when the rear window defogger is turned on. The rear window defogger and mirror heaters automatically turn off 15 minutes after the rear window defogger and mirror heaters were activated.

Automatic glare-resistant EC mirror function

Reduces glare/reflection in the mirror during nighttime driving for safer driving conditions.

Glare/reflection from vehicle headlights behind could blind the driver and cause dangerous driving conditions.

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CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the power mirror control system (w/ Memory). *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP

 Operation Check

OPERATION CHECK CHECK ELECTRICAL REMOTE CONTROL MIRROR FUNCTION (a) Turn the power switch on (IG). (b) b. With the mirror select switch driver side switch on, check that the outer rear view mirror ass

 Customize Parameters

CUSTOMIZE PARAMETERS CUSTOMIZE POWER MIRROR CONTROL SYSTEM (w/ Memory) NOTICE: When the customer requests a change in a function, first make sure that the function can be customized. Record the c

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 On-vehicle Inspection

ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during rear axle hub and bearing assembly on-vehicle inspection are shown below. Necessary Proce

 Terminals Of Ecu

TERMINALS OF ECU CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (a) Disconnect the J20 multiplex network master switch assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector discon

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