The concept

The system is functional at speeds beginning at approx. 20 mph/30 km/h.

It maintains the speed that was set using the control elements on the steering wheel.

The system brakes on downhill gradients if engine braking action is insufficient.

Do not use the system if unfavorable conditions Unfavorable conditions
Do not use the system if unfavorable conditions make it impossible to drive at a constant speed, for instance:

▷ On curvy roads.
▷ In heavy traffic.
▷ On slippery roads, in fog, snow or rain, or on a loose road surface.

Otherwise, you could lose control of the vehicle and cause an accident.◀

    See also:

    System limits
    Personal judgment The system cannot serve as a substitute for the driver's personal judgment of the traffic situation. The system assists the driver and does not replace the human eye. The s ...

    Vehicle equipment
    All standard, country-specific and optional equipment that is offered in the model series is described in this chapter. Therefore, equipment is also described that is not available in a vehicle, ...

    Interior lamps
    General information The interior lamps, footwell lamps, entry lamps and courtesy lamps are controlled automatically. The brightness of some of these lamps is influenced by the thumbwheel for the ...