2004 Mercedes ML-Class Owner's Manual - Page 155

Controls in detail Driving systems Warning indicators The warning indicators show the distance between the sensor and the obstacle. The warning indicators for the front area are located above the center air vents in the dashboard. The warning indicator for the rear area is located in the rear passenger compartment lamp. The gear selector lever position determines which warning indicator is activated. Selector lever position D, R, N, P R Warning indicator Front area activated Rear area activated ! If all red segments light up in the warning indicators, a dirty sensor or a ultrasonic signal could be the reason. Clean the sensors ( page 237). After cleaning the sensors, switch the ignition on. As soon as the sensors detect an obstacle, one or more segments light up, depending on the distance. An intermittent acoustic warning will also sound as the seventh segment comes on and a constant acoustic warning lasting a maximum of three seconds will sound for the eighth segment. 1 Segments, left side of vehicle 2 Segments, right side of vehicle Each warning indicator has six yellow and two red segments. 155