Home › Vehicle Interior › Supplemental Restraint Systems › OCCUPANT CLASSIFICATION SYSTEM
Last Modified: 11-27-2007 1.6 L
Service Category: Vehicle Interior Section: Supplemental Restraint Systems
Model Year: 2008 Model: LX570 Doc ID: RM0000010V002XX
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM: PRECAUTION (2008 LX570)

PRECAUTION

CAUTION:

Do not use seat accessories (such as cushions or covers) that cover the front seat. Also, do not modify or replace the upholstery of the front seat. Doing so may prevent the front passenger airbag system from activating correctly, disable the system or cause the front passenger airbag to inflate accidentally, and result in death or serious injury.

NOTICE:

  • Replace the occupant classification ECU, occupant detection sensor, seat cushion cover pad, seat cushion cover and seat cushion seat heater as a 5 part set (see supply set part No.).
  • When the cable is disconnected from the negative (-) battery terminal, the memory settings of each system will be cleared. Because of this, be sure to write down the settings of each system before starting work. When work is finished, reset the settings of each system as before. Never use a backup power supply from outside the vehicle to avoid erasing the memory in a system.
  • w/ Navigation system:

    After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.

1. INSPECTION PROCEDURE FOR VEHICLE INVOLVED IN ACCIDENT

(a) Perform zero point calibration and sensitivity check if any of the following conditions apply SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM: INITIALIZATION (2008 LX570) .

  • The No. 1 seat cushion (occupant classification ECU) is replaced.
  • The passenger airbag ON/OFF indicator indicates ("OFF") when the front passenger seat is not occupied.
  • The vehicle is brought to the workshop for repair due to an accident or a collision.

2. PRECAUTIONS WHEN USING THE TECHSTREAM

(a) When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle, and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.

(b) After all DTCs are cleared, check if the trouble occurs again 6 seconds after the engine switch is turned on (IG).