Left/Right Front Level Control System Sensor -G78- / -G289-, Removing And Installing: Notes

Special Tools And Workshop Equipment Required 

• Torque Wrench 1331 5-50 Nm :VAG1331 

General Information 

Vehicles with electronically-controlled damping and/or gas discharge lamps have an automatic headlamp range control system as standard equipment. Refer to AUTOMATIC HEADLAMP RANGE CONTROL .

To Function properly, the electronic damping and automatic headlamp range control need information about compression travel or rebound travel at the front and rear axles.

For this, the position of the left/right track control arm in relation to the body is transferred via a coupling rod to Left Front Level Control System Sensor -G78- and Right Front Level Control Sensor -G289-. These transmit electrical signals to the Electronic Damping Control Module -J250- and/or Left High-intensity Gas Discharge Lamp Control Module -J343- /Right High-intensity Gas Discharge Lamp Control Module -344-.

Left High-intensity Gas Discharge Lamp Control Module -J343- /Right High-intensity Gas Discharge Lamp Control Module -344- servicing. Refer to AUTOMATIC HEADLAMP RANGE CONTROL .

At the rear axle, these signals are transmitted from the Left Rear Level Control System Sensor -G76- and Right Rear Level Control System Sensor -G77- to the Electronic Damping Control Module -J250- and/or the Left High-intensity Gas Discharge Lamp Control Module -J343- /Right High-intensity Gas Discharge Lamp Control Module -344-.

These signals are required for determining vehicle level.

The headlamp range control responds automatically to changes in the vehicle level.

The vehicle level can change in the following situations:

• Trailer Mode
• Different load conditions; vehicle empty, vehicle partially or fully loaded

• The track control arm has been removed and reinstalled or replaced,
• The subframe was replaced,
• Installation work has been performed on the level control system sensor,
• The level control system sensor has been replaced,
• The threaded connection for coupling rod of level control system sensor was loosened at track control arm.

Basic setting of the headlamps. Refer to HEADLAMPS .

If the vehicle has electronically controlled damping, then the control position must be programmed using the Vehicle Diagnostic Tester. Refer to CONTROL POSITION, PROGRAMMING .

If the control position was reprogrammed on vehicles with lane assist, the Directional Stabilization Assistance Control Module -J759- must be calibrated again. Refer to LANE ASSIST, CALIBRATING .