The active lane assist uses a camera in the windscreen to detect lane markings (subject to general system limitations). If you approach one of the detected lane markings, the system corrects the steering to warn you that the vehicle might be about to cross one of the markings. You can override this steering input at any time. The steering wheel vibrates slightly if you cross a lane marking. The vibration warning must be activated beforehand in the MMI*. The active lane assist is functional when it detects a demarcation line on at least one side of the lane in which you are driving.
The system does not warn you if you operate the turn signal before crossing a lane marking. In this case, it assumes that you intend to change lanes.
As the system is designed for driving on motorways and other major roads, it is only active above a speed of about 65 km/h (may vary in different export markets).
WARNING!
- The system initiates a corrective steering input to warn the driver that the vehicle is about to leave the lane. As the driver you are always responsible for staying in your own lane.
- The system can assist you to keep the vehicle in the lane, however it is not capable of driving on its own. Never take your hands off the steering wheel.
- In certain situations, e.g. during heavy braking, the system may not correct the steering.
- In certain circumstances, not all of the lane markings may be detected by the camera. A corrective steering input can only be initiated if the system detects a lane marking on the side in question.
- Variations in the road surface or objects on the road may be misinterpreted as lane markings. In this case, the steering may be corrected unexpectedly or not at all.
- The camera's view may occasionally be obstructed, for example by vehicles travelling in front, rain, snow, heavy road spray, adverse light or a dirty windscreen. If this happens, the active lane assist may not detect the lane markings or may respond incorrectly.
- In certain circumstances, for instance if visibility is poor, the setting for the steering input may be switched from "early" to "late" 1).
- In certain driving conditions, such as ruts in the road surface, adverse cambers or side winds, the assistance provided by the steering correction may be insufficient to keep the vehicle in the middle of the lane.
- For safety reasons, the active lane assist must not be used in poor weather or in difficult or slippery road conditions (such as ice, fog, loose grit or gravel, heavy rain, snow, etc.) - risk of accident!
1) This function is not available on all export versions.