2009 Mercedes SLK-Class Owner's Manual - Page 188

Controls in detail Driving systems Changing the set speed G Warning! Keep in mind that it may take a brief moment until the vehicle has made the necessary adjustments. Increase or decrease the set vehicle speed to a value that the prevailing road conditions and legal speed limits permit. Otherwise, sudden and unexpected acceleration or deceleration of the vehicle could cause an accident and/or serious injury to you and others. 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. X Lift the cruise control lever in direction of arrow 1 and hold it up to increase, or depress the cruise control lever in direction of arrow 2 and hold it down to decrease, until the desired speed is reached. X Fine adjustment in 1 mph (Canada: 1 km/h) increments X Briefly tip the cruise control lever in direction of arrow 1 to increase or in direction of arrow 2 to decrease. Resume last stored speed G Warning! The set speed stored in memory should only be set again if prevailing road conditions and legal speed limits permit. Possible acceleration or deceleration differences arising from returning to the preset speed could cause an accident and/or serious injury to you and others. X X Briefly pull the cruise control lever in direction of arrow 4. Remove your foot from the accelerator pedal. Release the cruise control lever. The new speed is set and the vehicle will accelerate or decelerate. The last stored set speed is canceled when the engine is turned off. 186