2011 Mercedes GL-Class Owner's Manual - Page 184

182 Driving systems the speed range between 0 mph (0 km/h) and 120 mph (200 km/h). Do not use DISTRONIC while driving on roads with steep gradients. braking or accelerating, and the vehicle could skid. Rthe Distronic system sensor cover is dirty or visibility is diminished due to snow, rain or fog, for example. The distance control system functionality could be impaired. Always pay attention to surrounding traffic conditions even while the Distronic is switched on. Otherwise, you may not be able to recognize dangerous situations until it is too late. This could cause an accident in which you and/or others could be injured. Driving and parking G Warning DISTRONIC distance control is not a substitute for the driver's active involvement. It does not react to pedestrians or stationary objects and cannot detect or predict the road's course and the movements of the vehicles in front. DISTRONIC can only brake using 40% of the vehicle's maximum possible braking force. The driver must always pay attention to road, weather and traffic conditions. He must steer, brake and drive the vehicle so that he maintains control over it. High-frequency sources such as toll stations, velocity measurement systems, etc. may cause DISTRONIC to malfunction. G Warning! The "Resume" function should only be operated if the driver is fully aware of the previously set speed and wishes to resume this particular preset speed. G Warning! G Warning! The Distronic cannot take road and traffic conditions into account. Only use the Distronic if the road, weather and traffic conditions make it advisable to travel at a constant speed. G Warning! Use of the Distronic can be dangerous on slippery roads. Rapid changes in tire traction can result in wheel spin and loss of control. The Distronic does not function in adverse sight and distance conditions. Do not use the Distronic during conditions of fog, heavy rain, snow or sleet. Close attention to road and traffic conditions is imperative at all times, regardless of whether or not the Distronic is activated. Use of the Distronic can be dangerous on winding roads or in heavy traffic because conditions do not allow safe driving at a constant speed. The Distronic will not react to stationary objects in the roadway (e.g. a stopped vehicle in a traffic jam or a disabled vehicle). The Distronic will also not respond to oncoming vehicles. Switch off the Distronic Rwhen G Warning! The Distronic cannot take weather conditions into account. Switch off the Distronic or do not switch it on if: Rroads are slippery or covered with snow or ice. The wheels could lose traction while changing from the left to the right lane if vehicles are moving more slowly in the left lane Rwhen entering a turn lane or highway off ramp Rin complex driving situations, such as in highway construction zones In these situations, the Distronic will continue to maintain the set speed unless deactivated. The Distronic is designed and intended only to maintain a set speed and keep a set distance from moving objects in front of it.