2009 Mercedes SL-Class Owner's Manual - Page 154

Controls in detail Driving systems Increase the set vehicle speed to a value that the prevailing road conditions and legal speed limits permit. Otherwise, sudden and unexpected acceleration of the vehicle could cause an accident and/or serious injury to you and others. You can increase the set speed in two ways. Adjustment in 5 mph (Canada: 10 km/h) increments X Briefly lift the cruise control lever up in direction of arrow 1 (Y page 150). The new speed is set and the vehicle will accelerate. Keep in mind that it may take a brief moment until the vehicle has reached the set speed. Fine adjustment in 1 mph (Canada: 1 km/h) increments X Briefly pull the cruise control lever in direction of arrow 4 (Y page 150). Decrease the set vehicle speed to a value that the prevailing road conditions and legal speed limits permit. Otherwise, sudden and unexpected deceleration of the vehicle could cause an accident and/or serious injury to you and others. ble acceleration or deceleration differences arising from returning to the preset speed could cause an accident and/or serious injury to you and others. X i When you use the cruise control lever to decelerate, the brake system will automatically brake the vehicle if the engine's braking power does not brake the vehicle sufficiently. Adjustment in 5 mph (Canada: 10 km/h) increments X Briefly press the cruise control lever down in direction of arrow 2 (Y page 150). The new speed is set and the vehicle will decelerate. Keep in mind that it may take a brief moment until the vehicle has reached the set speed. Briefly pull the cruise control lever in direction of arrow 4 (Y page 150). If no speed is stored, the current speed is set and stored. Remove your foot from the accelerator pedal. X Deactivating Distronic X Depress the brake pedal. Briefly push the cruise control lever in direction of arrow 3 (Y page 150). The following message appears briefly in the multifunction display: DTR Off The last set speed is stored for later use. or X Setting a lower speed G Warning! Keep in mind that it may take a brief moment until the vehicle has made the necessary adjustments. Setting stored speed (Resume function) G Warning! The set speed stored in memory should only be set again if prevailing road conditions and legal speed limits permit. Possi- The last stored set speed is deleted when the engine is turned off. The Distronic switches off automatically when you depress the brake pedal or you engage the parking brake. 152