2008 Mercedes CL-Class Owner's Manual - Page 451

Controls in detail Driving systems In the following cases you cannot activate DISTRONIC Plus: up to 2 minutes after starting the engine if the engine is switched off if you step on the brake pedal while driving the vehicle is secured with the electronic parking brake if the gear selector lever is in park position P, reverse gear R, or neutral position N if ESP® is switched off if the hood is open if the driver's door is open and the driver has not fastened his or her seat belt if the radar sensors are switched off ( page 302). or Pull DISTRONIC Plus lever briefly in direction of arrow 4 to call up speed last set ( page 455). DISTRONIC Plus is switched on. Take your foot off the accelerator pedal. Your vehicle adapts its speed to the vehicle ahead, observing the set speed as a maximum value. Switching on while driving Tap DISTRONIC Plus lever up 1 or down 2 until desired speed is set. DISTRONIC Plus is switched on. i Under 20 mph (30 km/h), you can only switch on DISTRONIC Plus if the vehicle ahead of you has been detected and is shown on the multifunction display. If you no longer see the vehicle in front of you on the multifunction display and if it is no longer detected because it has changed lanes, for example, DISTRONIC Plus switches off and you will hear a signal. i If you do not completely lift your foot off the accelerator pedal, the message "DISTRONIC PLUS Override" appears on the multifunction display. The distance to a slower-driving vehicle will not be set. You will drive at the speed you dictate by pressing the accelerator pedal. 450