2011 Mercedes ML-Class Owner's Manual - Page 187

Driving systems Range of the sensors The sensors must be free of dirt, ice and slush; otherwise they may not function correctly. Clean the sensors regularly, taking care not to scratch or damage them (Y page 291). the vehicle. You could damage the vehicle or the objects. Ultrasonic sources such as an automatic car wash, a truck's compressed-air brakes or a pneumatic drill could cause PARKTRONIC to malfunction. Minimum distance Center Corners Approx. 8 in (20 cm) Approx. 6 in (15 cm) 185 If there is an obstacle within this range, all warning displays light up and a warning tone sounds. If the distance falls below the minimum, the distance may no longer be shown. Side view Warning displays The warning displays show the distance between the sensors and the obstacle. The warning display for the front area is located on the dashboard above the center air vents. The warning display for the rear area is in the roof lamp in the rear compartment. Top view Front sensors Center Corners Rear sensors Center Corners Approx. 48 in (120 cm) Approx. 32 in (80 cm) Approx. 40 in (100 cm) Approx. 24 in (60 cm) Warning display for the front area : Segments on the left-hand side of the vehicle ; Segments on the right-hand side of the ! When parking, pay particular attention to objects above or below the sensors, such as flower pots or trailer drawbars. PARKTRONIC does not detect such objects when they are in the immediate vicinity of vehicle = Segments showing operational readiness The warning display for each side of the vehicle is divided into five yellow and two red segments. PARKTRONIC is operational if Z Driving and parking