2010 Mercedes C-Class Owner's Manual - Page 183

Driving systems 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. 181 Setting current speed X G Warning! : Setting current or higher speed ; Setting current or lower speed = Canceling the cruise control ? Activating the cruise control or resuming i On uphill grades, the cruise control may not be able to maintain the set speed. Once the grade eases, the set speed will be resumed. On downhill grades, the cruise control maintains the set speed by braking with the vehicle's brake system. Vehicles with automatic transmission: In addition, on longer downhill grades the automatic transmission will downshift automatically. i Vehicles with manual transmission: If you depress the clutch pedal when shifting into another gear, the engine speed may increase. RAlways drive with sufficient, but not excessive, engine speed. RShift the gear in a timely manner. RAvoid shifting down more than one gear if at all possible. Canceling cruise control X 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 you brake you have engaged the parking brake Rwhen the automatic transmission is in park position P, reverse gear R, or neutral position N Rthe ESP® is switched off or has switched off Depress the brake pedal. or X due to a malfunction The vehicle speed displayed in the speedometer can briefly vary from the speed setting for the cruise control system. Briefly push the cruise control lever in direction of arrow =. The last set speed is stored for later use. The last stored speed is deleted from memory when the engine is turned off. The cruise control switches off automatically when you depress the brake pedal or you engage the parking brake. In this case, the cruise control speed segments in the multifunction display will go out. Z Controls in detail The cruise control brakes automatically so that the set speed is not exceeded. 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.