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

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2016 Audi S4, 2016 Audi A4 Quattro, 2016 Audi A4, 2015 Audi S4, and 2015 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Torque Wrench 1331 5-50Nm 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 HEADLAMP RANGE CONTROL MODULE, REMOVING AND INSTALLING .

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

NOTE:

Always program the control position on vehicles with electronic damping and check the headlamp adjustment if

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 HEADLAMP, ADJUSTING .

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 .