2011 Mercedes GL-Class Owner's Manual - Page 186

184 Driving systems Driving If there is no vehicle in front, DISTRONIC operates in the same way as cruise control. If a slower-moving vehicle is detected in front, DISTRONIC causes your vehicle to brake and maintain the preset distance to the vehicle in front. If DISTRONIC detects a faster-moving vehicle in front, it increases the driving speed, but only up to the desired speed you have stored. If DISTRONIC is deactivated, you will hear a warning tone. X To prevent the vehicle from rolling away, apply the foot brake or parking brake. Driving and parking Setting a 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. X G Warning! If you depress the brake pedal, DISTRONIC is deactivated. DISTRONIC will then no longer brake your vehicle. In such cases, control the distance from vehicles traveling in front with the brake alone. You could otherwise cause an accident and thereby injure yourself and others. The driver remains fully responsible for the vehicle's distance from other vehicles, the speed being driven and for braking in good time. Stopping G Warning! DISTRONIC must never be operated, activated or deactivated by a passenger or from outside the vehicle. Press the cruise control lever to the pressure point, up : for a higher speed or down ; for a lower speed. X Keep the cruise control lever pressed until the desired speed is reached. X Release the cruise control lever. The new speed is stored. DISTRONIC is activated and adjusts the vehicle's speed to the new speed stored. If DISTRONIC detects that the vehicle in front is stopping, it brakes your vehicle until it is stationary. Setting in 1 mph (Canada: 1 km/h) increments X i Depending on the specified minimum distance, your vehicle will come to a standstill at a sufficient distance behind the vehicle in front. The specified minimum distance is set using the thumbwheel on the cruise-control lever. DISTRONIC is deactivated automatically when stopping: Ron flat stretches of road or on downhill gradients when the vehicle is stationary Rwhile the vehicle is still moving on uphill gradients, to prevent the vehicle from unexpectedly rolling back when DISTRONIC is deactivated Briefly press the cruise control lever to the pressure point, up : for a higher speed or down ; for a lower speed. The last speed stored is increased or reduced. Setting in 5 mph (Canada: 10 km/h) increments X Briefly press the cruise control lever beyond the pressure point, up : for a higher speed or down ; for a lower speed. The last speed stored is increased or reduced.