System description: Notes

The HBA system is installed in vehicles with Litronic headlights.

The HBA system consists of the following components:

• Angle sensor for HBA, rear, with linkage
• Angle sensor for HBA, front, with linkage
• One stepper motor in each headlight (servomotor for HBA)
• Control module

Braking or acceleration, as well as loading, changes the inclination of the vehicle and therefore the headlight range. The HBA system already reacts to the above driving conditions when the dipped beam is switched on, preventing oncoming traffic from being dazzled. Furthermore, the system ensures an ideal headlight range for the driver in all driving situations.

The sensors at the front and rear axles measure the vehicle inclination and forwards this value as sensor signals to the control module, which carries out the further processing of the signals. If it should be necessary to change the headlight range, the stepper motors in the headlights are adjusted to the appropriate position. The HBA system also functions with the high-beam setting.