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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 - ) >> Description
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Entry Answer-back Buzzer does not Sound (08/2011 - ): Description

The smart access system with push-button start uses the wireless door lock buzzer to perform various vehicle exterior warnings. When the conditions of each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer signal to the wireless buzzer, and the wireless door lock buzzer sounds.