2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Occupant Classification System: Precaution: Precaution

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

When disconnecting the negative (-) battery cable, initialize the following systems after the cable is reconnected.

System Name Refer to Procedure
Power Window Control System Refer to INITIALIZATION
Sliding Roof System
  1. INSPECTION PROCEDURE FOR VEHICLE INVOLVED IN ACCIDENT 
    1. Perform the zero point calibration and sensitivity check if any of the following conditions occur.
      • The occupant classification ECU is replaced.
      • Accessories (seatback tray and seat cover, etc.) are installed.
      • The front passenger seat is removed from the vehicle.
      • The passenger airbag ON/OFF indicator ("OFF") comes on when the front passenger seat is not occupied.
      • The vehicle is brought to the workshop for repair due to an accident or a collision.
      NOTE:

      When an accident vehicle is brought into the workshop for repair, check the flatness of the body side that is equipped with the passenger seat. If the flatness is not within +- 3.0 mm (0.118 in.), adjust it to the specified range.

  2. EXPRESSIONS OF IGNITION SWITCH 

    The type of ignition switch used on this model differs according to the specifications of the vehicle.

    The expressions listed in the table below are used in this article.

    Switch Type Ignition Switch (position) Engine Switch (condition)
    Expression Ignition Switch off LOCK Off
    Ignition Switch on (IG) ON On (IG)
    Ignition Switch on(ACC) ACC On (ACC)
    Engine Start START Start
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.