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Home >> Lexus >> 2009 >> LX 570 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System (Keyless Entry) (Diagnostics & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> Entry Answer-back Buzzer does not Sound >> Procedure

Entry Answer-back Buzzer does not Sound: 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