2007 Mercedes S-Class Owner's Manual - Page 410

Controls in detail Driving systems Park Assist* Warning! G ! The operational function of the Park Assist system can be affected by dirty sensors, especially at times of snow and ice. Make sure that the area on the bumpers around the sensors is free of dirt, ice and/or slush, otherwise Park Assist may not function properly, see "Cleaning the Park Assist* system sensors" ( page 538). Park Assist is automatically activated when the engine is running and the transmission is in position D, R or N. The Park Assist system deactivates at speeds over approximately 11 mph (18 km/h). At lower speeds the Parktronic system turns on again. Park Assist is also switched off when the transmission is in position P or switch off the engine. While the transmission is in position N, Park Assist is switched off if you secure the vehicle in place with the electric parking brake. The Park Assist system monitors the surroundings of your vehicle with four sensors in the front bumper and two sensors in the rear bumper. Park Assist is a supplemental system. It is not intended to, nor does it replace, the need for extreme care. The responsibility during parking and other critical maneuvers always rests with the driver. ! High-frequency sources such as toll stations, speed measuring systems, etc. can cause the Park Assist system to malfunction. You can switch off the Park Assist using the Park Assist button ( page 412) or switch off the radar sensors ( page 256) to prevent possible malfunction. Warning! G Make sure no persons or animals are in the area in which you are maneuvering. You could otherwise injure them. i In certain countries and near radio-astrological facilities, you must switch off the radar sensors ( page 256). ! Special attention must be paid to objects with smooth surfaces or low silhouettes (e.g. trailer couplings, painted posts, elevated crossbars or road curbs). Such objects may not be detected by the system and can damage the vehicle. Park Assist is an electronic parking aid with radar sensors that helps you while parking. It visually and audibly indicates the relative distance between the vehicle and an obstacle. 409