2013 Lexus LS 600hLFACTORY OEM SERVICE PROCEDURE

Jam Protection Function does not Operate: Procedure

  1. PERFORM INITIALIZATION 
    1. Initialize the power window regulator motor assembly.
    2. Check if the power window AUTO UP/DOWN function operates normally.

      OK

      AUTO UP/DOWN function operates normally.

    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 normally 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 normally.

      RESULT:

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

    B → See step   3 

    C → See step   5 

    D → See step   4 

    E → See step   6 

    A → END 

  3. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to  REMOVAL [09/2012 - ] 
  4. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to  REMOVAL [09/2012 - ] 
  5. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to  REMOVAL [09/2012 - ] 
  6. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to  REMOVAL [09/2012 - ] 
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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.