Headlight Beam Level Control ECU
WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
Based on the signals that are transmitted by height control sensors, the occupant detection sensor and the skid control ECU, this ECU detects the amount of variance of the vehicle posture. Based on the detected value, this ECU outputs control signal to the actuator. The headlight beam level control ECU provides initial set control and fail-safe function.