2007 Mercedes R-Class Owner's Manual - Page 292

Controls in detail Driving systems Parktronic* (Parking assist) Warning! Warning! The Parktronic system deactivates at vehicle speeds exceeding approximately 11 mph (18 km/h). At lower vehicle speeds, the Parktronic system turns on again. The Parktronic system also deactivates when you set the automatic transmission to position P or depress the parking brake pedal. The Parktronic system monitors the surroundings of your vehicle with six sensors in the front bumper and four sensors in the rear bumper. G G Parktronic 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. Special attention must be paid to objects with smooth surfaces or low silhouettes (e.g. trailer couplings, painted posts, or road curbs). Such objects may not be detected by the system and can damage the vehicle. The operational function of the Parktronic system can be affected by dirty sensors, especially at times of snow and ice. See "Cleaning the Parktronic system sensors" ( page 414). Interference caused by other ultrasonic signals (e.g. working jackhammers, car wash, or the air brakes of trucks) can cause the system to send erratic indications, and should be taken into consideration. Make sure no persons or animals are in the area in which you are maneuvering. You could otherwise injure them. The Parktronic system is an electronic aid designed to assist the driver during parking maneuvers. It visually and audibly indicates the relative distance between the vehicle and an obstacle. The Parktronic system is automatically activated when you switch on the ignition or start the engine and release the parking brake and set the automatic transmission to position D, R, or N 1 Sensors in the front bumper 291