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Home >> Lexus >> 2011 >> LX 570 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Smart Access System With Push-Button Start (For Entry Function) (Diagnostics & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> Symptom Tests >> Entry Answer-back Buzzer does not Sound (08/2011 - ) >> Procedure
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Entry Answer-back Buzzer does not Sound (08/2011 - ): Procedure

  1. CHECK WIRELESS DOOR LOCK BUZZER OPERATION 
    1. When the wireless operation is used to lock and unlock the doors, check that the wireless door lock buzzer sounds normally. Refer to OPERATION CHECK .

      OK

      Operates normally.

    NG → See step   2 

    OK → See step   3 

  2. GO TO WIRELESS DOOR LOCK CONTROL SYSTEM. Refer to  PROBLEM SYMPTOMS TABLE 
  3. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL