Lexus ES manuals

Lexus ES: System Description

SYSTEM DESCRIPTION

GENERAL

(a) This system has a rear television camera assembly mounted on the luggage compartment door to display an image of the area behind the vehicle on the multi-display. The multi-display also shows a composite view consisting of the area behind the vehicle and parking guide lines to assist the driver in parking the vehicle by monitoring the area behind the vehicle.

(b) This system consists of the following components:

(1) Rear television camera assembly

(2) Multi-display assembly

(3) Steering sensor

(4) ECM

(5) Main body ECU (multiplex network body ECU)

(6) Blind spot monitor sensor*1

(7) Clearance warning ECU assembly*2

(8) Park/neutral Position Switch Assembly*3

  • *1: w/ Blind Spot Monitor System
  • *2: w/ Parking Support Alert System
  • *3: for 8 inch display

(c) This system is equipped with a self-diagnosis system, which is operated on a designated window that appears on the multi-display.

FUNCTION OF COMPONENTS

(a) The rear television camera assembly controls the system by using information from the following components.

Item

Function

Rear Television Camera Assembly

  • Mounted on the luggage compartment door to transmit a composite image of the area behind the vehicle and guide lines calculated based on signals received from each ECU, to the multi-display assembly.
  • Has a color video camera that uses a Complementary Metal Oxide Semiconductor (CMOS) and wide-angle lens.
  • Stops displaying the guide lines when an open signal is received for the luggage compartment door.
  • Performs overall control of the system by receiving signals from the sensor and ECUs.

Multi-display Assembly

  • Receives video signals which contain a composite image of the area behind the vehicle taken with the rear television camera assembly and guide lines calculated based on signals received from each ECU.
  • Transmits a setting information signal to the rear television camera assembly via CAN communication.
  • Receives diagnostic mode video signals from the rear television camera assembly.
  • Displays "You can not calibrate the camera when the door is open. Please close the door." on the back camera position setting screen when the luggage compartment door is open.

Steering Sensor

Detects the angle of the steering wheel and transmits the resulting signals to the rear television camera assembly via CAN communication.

ECM

Transmits the vehicle information signal to the rear television camera assembly via CAN communication.

Main Body ECU (Multiplex Network Body ECU)

Transmits the luggage compartment door courtesy switch signal and vehicle information signal to the rear television camera assembly via CAN communication.

Blind Spot Monitor Sensor*1

Transmits the RCTA information signal to the rear television camera assembly via CAN communication.

Clearance Warning ECU Assembly*2

  • Transmits the sonar information signal to the rear television camera assembly via CAN communication.
  • Sends a signal to the multi-display assembly to change the display screen.*4

Park/neutral Position Switch Assembly*3

Transmits the reverse signal to the multi-display assembly.

  • *1: w/ Blind Spot Monitor System
  • *2: w/ Parking Support Alert System
  • *3: w/o Parking Support Alert System
  • *4: for 12.3 inch display

OPERATION EXPLANATION

(a) Operation description of the park assist monitor system

(1) The multi-display assembly receives the reverse signal when the engine switch is on (IG) and the shift lever is moved to R. After receiving the reverse signal, the multi-display switches to the parking assist monitor system.

DISPLAY MODE

(a) Rear view screen

*a

Guide Line Display Mode Switching Button

*b

Estimated Course Line Display Mode

*c

Parking Assist Guide Line Display Mode

*d

Distance Guide Line Display Mode

*e

Display Mode Switching Button

*f

Guide Line Display Mode Switching Button Pressed

HINT:

The screen changes to the wide rear view screen when the display mode switching button is selected.

(1) While the parking assist monitor is displayed on the multi-display, pressing the guide line display mode switching button switches the parking assist monitor display mode.

Parking Assist Monitor Display Mode

Parking Assist Monitor Display Mode

Distance Guide Lines

(Red)

Estimated Course Lines

(Yellow)

Distance Guide Line

(Yellow)

Vehicle Width Extension Guide Line

(Blue)

Distance Guide Line

(Blue)

Parking Assist Guide Lines

(Blue)

Vehicle Center Line

(Blue)

Estimated course line display mode

Displayed

Displayed

Displayed

Displayed

Displayed

Not displayed

Displayed

Parking assist guide line display mode

Displayed

Not displayed

Not displayed

Displayed

Not displayed

Displayed

Displayed

Distance guide line display mode

Displayed

Not displayed

Not displayed

Not displayed

Not displayed

Not displayed

Not displayed

(b) Wide rear view screen

*a

Guide Line Display Mode Switching Button

*b

Estimated Course Line Display Mode

*c

Parking Assist Guide Line Display Mode

*d

Distance Guide Line Display Mode

*e

Display Mode Switching Button

*f

Guide Line Display Mode Switching Button Pressed

HINT:

The screen changes to the rear view screen when the display mode switching button is selected.

(1) While the parking assist monitor is displayed on the multi-display, pressing the guide line display mode switching button switches the parking assist monitor display mode.

Parking Assist Monitor Display Mode

Parking Assist Monitor Display Mode

Distance Guide Lines

(Red)

Estimated Course Lines

(Yellow)

Distance Guide Line

(Yellow)

Vehicle Width Extension Guide Line

(Blue)

Distance Guide Line

(Blue)

Parking Assist Guide Lines

(Blue)

Vehicle Center Line

(Blue)

Estimated course line display mode

Displayed

Displayed

Displayed

Displayed

Displayed

Not displayed

Displayed

Parking assist guide line display mode

Displayed

Not displayed

Not displayed

Displayed

Not displayed

Displayed

Displayed

Distance guide line display mode

Displayed

Not displayed

Not displayed

Not displayed

Not displayed

Not displayed

Not displayed

DIAGNOSTIC FUNCTION OUTLINE

(a) This parking assist monitor system has a diagnostic function displayed on the multi-display. This function enables calibration (adjustment and verification) of the parking assist monitor system.

Click here

(b) The following items for the parking assist monitor system can be checked using the Techstream.

Item

Proceed to

DTC

Data List / Active Test

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