 
- Fig. 1 Turn signal lever: Button for active lane assist
 
- Fig. 2 Windscreen: Camera window for active lane assist
Applies to vehicles: with active lane assist
Press the button Fig. 1 to switch the system on/off. The indicator lamp  or
 or  in the instrument cluster will light up or go out.
 in the instrument cluster will light up or go out.
 or
 or  in the instrument cluster will light up or go out.
 in the instrument cluster will light up or go out.Indicator lamps
 Ready: The indicator lamp lights up when the system is fully functional. The system is ready to intervene.
 Ready: The indicator lamp lights up when the system is fully functional. The system is ready to intervene. Not ready: The indicator lamp lights up when the system is switched on but not ready to intervene. The causes for this can include the following:
 Not ready: The indicator lamp lights up when the system is switched on but not ready to intervene. The causes for this can include the following:- There is no lane marking or only one.
- The system cannot detect the relevant lane markings (e.g. temporary markings for road works or markings obscured by snow, dirt, rain or adverse light).
- The vehicle's speed is below 65 km/h, the speed at which the lane assist system is activated (the threshold may vary in different export markets).
- The lane is narrower than 2.5 m or wider than 5 m.
- The bend is too tight.
- You have taken your hands off the steering wheel.