Active Lane Change Assist supports the driver when changing lanes and is activated by indicating briefly.
You are on a motorway or high-speed major road.
The vehicle speed is between approximately 80 km/h and 180 km/h.
The neighbouring lane is separated by a broken lane marking.
No vehicle or obstacle is detected in the adjacent lane.
Since the last time the vehicle was started, the sensors have detected a vehicle at a suitable distance behind your vehicle.
Active Lane Change Assist is selected in the multimedia system.
Active Distance Assist DISTRONIC and Active Steering Assist are activated on motorways.
Active Distance Assist DISTRONIC and Active Steering Assist were already activated before entering the motorway.
The system briefly does not detect the road you are on as a motorway or a motorway-like road, e.g. on a motorway junction.
As soon as Active Lane Change Assist detects a suitable road, you can reactivate it with , or .
When Active Lane Change Assist is available, the display appears along with green arrows in the driver display. If the system has been activated but is not currently available, the display appears along with grey arrows in the driver display.
If no vehicle or obstacle is detected in the adjacent lane and a lane change is permitted, the lane change begins after the driver has indicated briefly. The lane change is shown to the driver with a flashing green arrow next to the steering wheel symbol. Green arrow is displayed in the appropriate adjacent lane in the Assistance menu in the driver display. The Lane change to the left message, for example, also appears.
Change in the surrounding conditions (e.g. detected obstacle).
The driver removes their hands from the steering wheel.
The driver steers with too much force or in the opposite direction.
The driver moves the turn signal indicator in the opposite direction.
Active Distance Assist DISTRONIC or Active Steering Assist is deactivated.
The vehicle cannot make the lane change as planned.
The arrow in the selected direction of travel turns red.
A corresponding message appears on the driver display.
In certain circumstances a warning tone sounds.
Lane Change Assist cannot always clearly detect if the adjacent lane is free.
The lane change might be initiated although the adjacent lane is not free.
If the system limitations for Lane Change Assist have been reached, there is no guarantee that the system will remain active.
Lane Change Assist cannot then assist you by applying steering torque.
The system limitations of Active Steering Assist apply to Active Lane Change Assist More.
The sensors are damaged, covered or dirty More.
The exterior lighting shows a defect.
The system does not detect a suitable road, for example, in tight bends or shortly after a slip road.
The vehicle is on a construction site.
The Active Lane Change Assist sensors adjust automatically while a certain distance is being driven after the vehicle has been delivered. Active Lane Change Assist is unavailable or only partially available during this teach-in process, and no arrows are displayed next to the Active Steering Assist symbol.
Observe the notes on driving systems and your responsibility; you may otherwise fail to recognise dangers More.