2008 Mercedes C-Class Owner's Manual - Page 246

Controls in detail Driving systems Setting a lower speed Warning! Adjustment in 1 mph (Canada: 1 km/h) increments Release the cruise control lever. The vehicle set speed decreases in increments 5 mph (Canada: 10 km/h). G i The set speed value is decreased in 1 mph (Canada: 1 km/h) increments each time you press the cruise control lever down to the resistance point. If you decrease the set vehicle speed, keep in mind that it may take a brief moment until the vehicle has the vehicle has reached the set speed. Decelerate 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. i 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 press the cruise control lever down to the resistance point in direction of arrow 2 ( page 242). Release the cruise control lever. The vehicle set speed decreases in increments 1 mph (Canada: 1 km/h). Adjustment in 5 mph (Canada: 10 km/h) increments Setting to last stored speed ("Resume" function) Warning! G You can reduce the set speed in two ways. 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. i The set speed value is decreased in 5 mph (Canada: 10 km/h) increments each time you press the cruise control lever down past the resistance point. The set speed stored in memory should only be set again if prevailing road conditions 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. Briefly press the cruise control lever down past the resistance point in direction of arrow 2 ( page 242). 245