Adaptive Cruise Control

Adaptive Cruise Control

Distance Regulation Sensor and Distance Regulation Control Module (J428) are installed in one housing. If sensor/control module is faulty, entire unit must be replaced.

In the following description, the sensor/control module unit is identified as the "sensor".

The sensor radar cover is located behind the front bumper cover and is made of material that can be penetrated by radar. All changes such as paint applied later, adhesive applied, etc. can cause malfunctions.

Malfunctions can also occur due to contamination on the sensor. Remove the air intake grille or radiator grille in front of the sensor according to the repair information instructions and clean the inside of the air intake grille and the sensor.

Before performing ACC adjustment, check the DTC memory and correct any malfunctions.

ACC control module "measured value block 2" shows whether sensor is misaligned.

If sensor is out of adjustment by -0.8° to +0.8°, it does not need to be readjusted.

The ACC adjustment may only be set using a VW/Audi-approved wheel alignment tester and adjustment device!

A correct adjustment is required for perfect ACC function.

• A new adjustment is necessary if:

• Rear axle toe is adjusted.

• The complete Adaptive Cruise Control Sensor (G550) must be replaced.

• Cross member for bumper is loosened or adjusted.

• There is damage on the front end.

• Sensor is out of adjustment in angles greater than -0.8° to +0.8°.