2003 Mercedes ML-Class Owner's Manual - Page 151

Controls in detail Driving systems The selector lever position determines which warning indicator is activated. Selector lever position D R N or P Warning indicator Front area activated Rear area activated No area activated Switching Parktronic on/off You can switch Parktronic off manually. The switch is located on the lower part of the center console. Switching Parktronic off Press switch on the upper part 1. Indicator lamp 2 lights up. Switching Parktronic on Press switch on the upper part 3. The indicator lamp 2 goes out. 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 lights up and a constant acoustic warning lasting a maximum of 3 seconds will sound for the eighth segment. i If you switch the ignition on, Parktronic will be automatically switched on. The rear Parktronic sensors will not automatically disengage when towing a trailer. Therefore switch Parktronic off. ! 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 220). After cleaning the sensors, switch the ignition on. 1 Switching off 2 Indicator lamp 3 Switching on ! If Parktronic is malfunctioning, all red segments of the warning indicators light up and an additional warning sounds. Contact your Mercedes-Benz Light Truck Center as soon as possible. 151