2008 Lexus ES 350FACTORY OEM SERVICE PROCEDURE

Sliding Roof

  1. INITIALIZE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY 
    NOTE: If the sliding roof drive gear is replaced or if the battery is removed during sliding roof operation, the sliding roof drive gear will require initialization. If initialization is not performed, the following functions will not operate: auto operation and key off operation.
    1. Turn the engine switch on (IG).
    2. Make sure that the sliding roof is fully closed.
    3. Push and hold the CLOSE switch or the UP switch until the following movement finishes: Tilt up → approximately 1 second → tilt down → slide open → slide closed.
    4. Check that the sliding roof stops at the fully closed position.
    5. Finish the initialization.
    6. Check that the AUTO operation works normally.
      NOTE: If the following conditions occur during initialization procedure, initialization will fail.
      • Engine switch is turned off.
      • Sliding roof control switch is released while sliding roof is operating.
      • Vehicle speed is 5 km/h (3 mph) or more.
      • Communication is cut off.
      • Another switch is turned on during initialization.
      • The vehicle experiences a strong vibration during initialization, such as the slamming of a door.

      HINT:

      • If the sliding roof cannot be fully closed or its position has become misaligned, perform initialization again.
      • If the roof glass stops moving or starts moving in the opposite direction while the CLOSE or UP switch is held down, continue to hold the switch for another 10 seconds or more to return the sliding roof control ECU to an un-initialized condition. Then perform the initialization procedure again.
      • If the AUTO operation function and jam protection function do not operate after the drive gear has been reset, replace the sliding roof drive gear (sliding roof ECU).
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.

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