No Answer-Back (Hazard Warning Light and Wireless Door Lock Buzzer): Description
WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
If there is no answer-back of the hazard light signal and the wireless door lock buzzer although the wireless control function is operating normally, there might be a malfunction in the hazard light signal and the wireless door lock buzzer signal which are output from the main body ECU RH (cowl side junction block RH)
NOTE:
Troubleshooting should be started after confirming that the wireless buzzer and hazard answer back function has been switched ON through customization.