2008 Mercedes R-Class Owner's Manual - Page 258

Controls in detail Driving systems Driving systems The driving systems of your vehicle are described on the following pages: Cruise control ( page 257) and Distronic* ( page 262), with which the vehicle can maintain a preset speed. Distance warning function* ( page 275) is only available with Distronic*, which warns of stationary obstacles or slower moving vehicles that you are closing in on too quickly. AIRMATIC* ( page 276) adjusts the vehicle suspension characteristics automatically and controls the vehicle level. Parktronic* ( page 281) and rear view camera* ( page 285), which serve as a parking aid. For information on the ABS, BAS, EBP, ESP®, and 4-ETS, see "Driving safety systems" ( page 99). Cruise control Warning! The cruise control automatically maintains the speed you set for your vehicle. The use of cruise control is recommended for driving at a constant speed for extended periods of time. You can set or resume cruise control at any speed above 20 mph (30 km/h). The cruise control function is operated by means of the cruise control lever. The cruise control lever is the uppermost lever on the left-hand side of the steering column ( page 24). G The cruise control is a convenience system designed to assist the driver during vehicle operation. The driver is and must always remain responsible for the vehicle's speed and for safe brake operation. Only use the cruise control if the road, traffic and weather conditions make it advisable to travel at a constant speed. The use of the cruise control can be dangerous on winding roads or in heavy traffic because conditions do not allow safe driving at a constant speed. The use of the cruise control can be dangerous on slippery roads. Rapid changes in tire traction can result in wheel spin and loss of control. Deactivate the cruise control when driving in fog. The "Resume" function should only be operated if the driver is fully aware of the previously set speed and wishes to resume this particular preset speed. 257