2005 Mercedes SL-Class Owner's Manual - Page 225

Controls in detail Driving systems Parktronic* (Parking assist) Warning! Warning! 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 318). 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. Otherwise you run the risk of causing injury. 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, release the parking brake, or place the gear selector lever in Position D, R, or N. The Parktronic system deactivates at speeds above 11 mph (18 km/h). At lower speeds the Parktronic system turns on again. The Parktronic system also deactivates when you place the gear selector lever in Position P or depress the brake pedal. 1 Sensors in the front bumper 223