Fail-Safe Function

WARNING: This page is about a different car, the 2002 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

The Headlight Leveling Control ECU performs the fail-safe when detecting following troubles.

At this it lights the warning light ("HEADLIGHT LEVELING") on the combination meter (multi-information display

Fig 1: ECU Fail-Safe Function Chart

Recovery condition (The warning light goes off.)

In case of 1, 2 and 3: ignition switch OFF
In case of 4 and 5: ignition switch OFF or signal lever error cancellation