Circuit Description
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
When the anti-theft system is activated, it causes the transistor in the ECU to switch ON and OFF at approximately 0.4 second intervals. This switches the headlight control relay ON and OFF, thus flashing the headlights. In this condition, if any of the following operations is done, the transistor in the ECU goes OFF and the headlight control relay switches OFF, thus stopping the headlights flashing:
- Unlock the front LH or RH door with a key.
- Turn the ignition switch to the ON position.
- Unlock the doors with the wireless door lock control system.
- Wait for approximately 60 seconds.