Function of individual components: Notes

The control module is installed on the passenger's side below the passenger's airbag unit. If the control module is replaced, the following points must be observed:

1. Coding of the vehicle type
2. Calibration of the control module
3. Adjustment of the headlights

If a new control module is installed, fault codes "6 Control unit coding error" and "7 Calibration not performed yet" are stored.

Remedy: 

Start the automatic control module search and code the vehicle type. Then perform a calibration and then erase the fault memory. Adjust the headlights after calibration.

The HBA system is activated when the parking light is switched on (terminal 58). The headlights are set to high-beam position when the high-beam switch is operated.

The sensor is fastened on the left side of the rear axle and is connected to the lower axle strut by a linkage.

A sensor measures the compression travel and forwards this value as a sensor voltage to the control module.

The sensor is fastened on the left side of the front axle and is connected to the axle strut by a linkage. A sensor measures the compression travel and forwards this value as a sensor voltage to the control module.

Each headlight includes a stepper (servomotor for HBA) which is activated by the control module. Figure (arrow) shows the connections for the respective servomotor.