HEADLIGHT AUTO LEVELING SYSTEM OPERATION

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Optical Axis Adjustment

• A vehicle-height condition signal is sent to the auto leveling control module from the front and rear auto leveling sensors installed to the vehicle based on the jounce and rebound changes of the suspension.
• An auto leveling control module controls the headlight leveling actuator by calculating the optimum amount of optical axis adjustment.

Varying Passenger and Cargo Conditions Operation

1. According to the fluctuation of the suspension, the auto leveling sensors installed in the front and rear of the vehicle send a signal to the auto leveling control module.

2. When a difference between two of the signals input from the auto leveling sensors is detected, the auto leveling control module verifies the vehicle attitude, then calculates the amount of optical axis adjustment. The auto leveling control module compares the actual and required positions of the reflector, then inputs a command signal to the headlight leveling actuator.

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Operation When Driving

1. If the auto leveling control module detects that the vehicle is moving at a constant vehicle speed while the headlights are on, the average value of the vehicle attitude during the period is calculated and the optical axis is adjusted (optical axis adjustment is performed only once while the vehicle speed is 30 km/h {19 mph} or more).