2011 Mercedes SL-Class Owner's Manual - Page 133

Driving systems The currently set speed or last set speed ("Resume" function) appears in the left multifunction display: RUSA 131 only: e.g. CC 55 MPH only: e.g. ¯ 90 Km/h RCanada 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. RThe 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. RThe : Setting current or higher speed ; Setting current or lower speed = Canceling the cruise control ? Activating the cruise control or resuming to last set speed Activating cruise control You can activate the cruise control at a vehicle speed above 20 mph (30 km/h). You cannot activate the cruise control Rwhen Rwhen 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. the cruise control when driving in fog. you brake you have engaged the parking brake RDeactivate Rwhen the automatic transmission is in park 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. position P, reverse gear R, or neutral position N Rthe ESP® is switched off or has switched off due to a malfunction The vehicle speed displayed in the speedometer can briefly vary from the speed setting for the cruise control system. G Warning! The cruise control brakes automatically so that the set speed is not exceeded. Setting current speed X Accelerate or decelerate to the desired speed. X Briefly lift the cruise control lever in direction of arrow : or press in direction of arrow ;. X Remove your foot from the accelerator pedal. i On uphill grades, the cruise control may not be able to maintain the set speed. Once Z Controls in detail G Warning!