Lane Assist, General Information

Lane assist helps the driver keep the vehicle in its lane. If the system is in operation and the vehicle approaches a recognized boundary line and will leave the lane, the driver is notified by a vibration in the steering wheel. If the system is in operation and the turn signal is activated before driving over a recognized boundary, the warning is not given because the system assumes it is an intentional lane change.

The camera and Directional Stabilization Assistance Control Module -J759- are installed in one housing. The entire unit must be replaced if the camera or control module is faulty.

The Directional Stabilization Assistance Control ModuleJ759 is installed at the center of the top edge of the windshield at the level of the interior rearview mirror. It is secured in a bracket that is bonded to the windshield.

Changes that restrict the visual area of the camera (such as applying labels, stone damage) can lead to malfunctions.

The button for the Directional Stabilization Assistance -E517- is integrated in a mount with the turn signal lever. Pressing the button switches the system on and off. If the Directional Stabilization Assistance Button -E517- is faulty, the mount must be completely replaced with the Cruise Control Switch -E45- and the Windshield Wiper Intermittent Mode Switch -E22-, refer to STEERING COLUMN COMBINATION SWITCH, REMOVING AND INSTALLING .

• The camera visual field is dirty or icy. If that is the problem, it should be corrected.
• There is condensation on the camera visual field. If this is the case, wait until the condensation disappears.
• Lane lines are not visible for an extended period of time due to road conditions (such as snow on the road surface).

If the condensation does not clear on its own or if there is heavy dirt on the inside of the lens (in the camera visual field), the camera visual field must be cleaned by hand. To do this, remove the control module and the lens and clean the windshield using the Cleaning Solution. Control Module and Lens Screen, Removing, refer to Directional Stabilization Assistance Control Module -J759- AND LENS, REMOVING AND INSTALLING .

The calibration must be correct for proper lane assist function.

Calibration is necessary if:

• "No or incorrect basic setting/adaptation" is stored actively in the DTC memory.
• the Directional Stabilization Assistance Control Module -J759- is replaced.
• The windshield is replaced or removed.
• the rear axle toe is adjusted.
• the vehicle suspension was changed, for example, changing from standard to sport suspension.
• The level control system sensor on vehicles with electronically controlled damping was adapted.