2005 Mercedes CLK-Class Owner's Manual - Page 259

Controls in detail Driving systems i On uphill or downhill grades, cruise control may not be able to maintain the set speed. Once the grade eases, the set speed will be resumed. CLK 320/CLK 55 AMG: If the engine's braking power does not brake the vehicle sufficiently on downhill grades, the automatic transmission will automatically downshift. CLK 500: On downhill grades, the cruise control will hold the set speed with active braking action. In addition, on longer downhill grades the automatic transmission will automatically downshift. Canceling cruise control There are several ways to cancel cruise control: Step on the brake pedal. Cruise control is canceled. The last speed set is stored for later use. or Briefly push the cruise control lever to position 3. Cruise control is canceled. The last speed set is stored for later use. i Cruise control automatically switched off, if CLK 320/CLK 55 AMG: you step on the brake pedal. you move the gear selector lever in position N while driving. the vehicle speed is under 20 mph (30 km/h). ESP is in operation. The segments in the multifunction display are flashing. CLK 500: you step on the brake pedal. you press the parking brake pedal. In this case the segments in the multifunction display ( page 256) go out and no warning sounds. i The last stored speed is canceled when you turn off the engine. 257