2008 Lexus LX 570FACTORY OEM SERVICE PROCEDURE

Inspection Procedure

  1. PERFORM INITIALIZATION 
    1. Initialize the power window regulator motor (See INITIALIZATION  ).
    2. Check if the power window auto up/down function operates (See OPERATION CHECK  ).

      OK: Auto up/down function operates. 

    NG: END (PROBLEM DUE TO INITIALIZATION FAILURE) 

    OK: Go to next step 

  2. CHECK JAM PROTECTION FUNCTION OPERATING RANGE 
    1. Check if the jam protection function operates for applicable power window.

      HINT:

      The jam protection function does not operate from the fully closed position of the door glass to 4 mm (0.157 in.) below that.

      OK: Jam protection function operates. 

      Result 

      DTC RESULT REFERENCE

      Result Proceed to
      OK A
      NG (Driver side power window) B
      NG (Front passenger side power window) C
      NG (Rear power window LH) D
      NG (Rear power window RH) E

    B: REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH  (See REMOVAL  )

    C: REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH  (See REMOVAL  )

    D: REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH  (See REMOVAL  )

    E: REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH  (See REMOVAL  )

    A: END 

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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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