Security Indicator Light Does not Blink [09/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 550h+ and 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
- The certification ECU (smart key ECU assembly) blinks the security indicator light (theft warning indicator light assembly) when the immobilizer is set (ignition switch off).
- The certification ECU (smart key ECU assembly) receives the security indicator light signal from the main body ECU (multiplex network body ECU) via CAN communication when the theft deterrent system is in the arming preparation state or alarm sounding state. Then, the certification ECU (smart key ECU assembly) blinks the security indicator light (theft warning indicator light assembly).