Dynamic Headlamp Leveling - AFS Headlamps Only

Dynamic Headlamp Leveling - AFS Headlamps Only

Dynamic headlamp leveling is only available on vehicles with AFS headlamps.

The dynamic headlamp leveling adjusts the vertical alignment of the headlamps as a rapid response to changes in vehicle attitude due to acceleration or braking.

The dynamic system is fully automatic, therefore the lighting control switch does not have a manual leveling rotary control.

NOTE: The AFS system also operates in conjunction with the static vehicle leveling system as described previously.

The dynamic system comprises the following components:
^ Two headlamp leveling motors
^ AFS control module
^ Engine running signal from engine control module
^ Vehicle speed information from ABS module
^ Vehicle height information from air suspension control module.

When the ignition switch is in position (II), power is supplied to the lighting control switch via the ignition relay in the Battery Junction Box (BJB) and to the AFS control module. When the lighting control switch is moved to the side lamp or headlamp position, the supply from the ignition relay is passed to the AFS control module.

NOTE: When the AFS control module receives an ignition on signal, the control module performs an initialisation procedure for both the AFS and headlamp leveling motors.

The system operates by the AFS control module receiving inputs on the CAN from the air suspension control module for front and rear vehicle height, from the engine control module for engine running signal and from the ABS module for stop lamp switch active (brakes applied) and vehicle speed. The AFS control module processes these signals and provides an output to the headlamp leveling motors to adjust the headlamp vertical aim according to vehicle speed and attitude.

NOTE: In markets with Daytime Running Lamps (DRL), the dynamic headlamp leveling system will not operate when the DRL are active.