2003 Mercedes SL-Class Owner's Manual - Page 187

Controls in detail Driving systems Range of the sensors To function properly, the sensors must be free of dirt, ice snow and slush. Clean the sensors regularly, being careful not to scratch or damage the sensors. Rear sensors Center Corners approx. 48 in (120 cm) approx. 32 in (80 cm) Minimum distance Center Corners approx. 8 in (20 cm) approx. 6 in (15 cm) ! During parking maneuvers, pay special attention to objects located above or below the height of the sensors (e.g. planters or trailer hitches). The Parktronic system will not detect such objects at close range and damage to your vehicle or the object may result. Ultrasonic signals from outside sources (e.g. truck air brakes or jackhammers) may impair the operation of the Parktronic system. If you encounter an obstacle in this range, all the warning lamps light up and you hear a warning signal. If the obstacle is closer than the minimum distance, the actual distance may no longer be indicated by the system. Warning indicators Visual signals indicate to the driver the relative distance between the sensors and an obstacle. The warning indicator for the front area is located above the center air vents in the dashboard. The warning indicator for the rear area is integrated in the rear trim. Front sensors Center Corners approx. 40 in (100 cm) approx. 48 in (120 cm) 187