2003 Mercedes ML-Class Owner's Manual - Page 158

Controls in detail Useful features Electrical outlet i The outlets function even if the key is not in the ignition. The electrical outlet can be used to accommodate electrical consumers (e.g. air pump, auxiliary lamps) up to a maximum of 180 W. If the engine is off, the battery may become discharged if used for long periods of time. Telephone* Warning! G Electrical outlet Never operate radio transmitters equipped with a built-in or attached antenna (i.e. without being connected to an external antenna) from inside the vehicle while the engine is running. Doing so could lead to a malfunction of the vehicle's electronic system, possibly resulting in an accident and/or serious personal injury. One outlet is located in the front passenger footwell and another on the right-hand side of the luggage compartment. Flip up cover and insert electrical plug (cigarette lighter type). Radio transmitters, such as a portable telephone or a citizens band unit, should only be used inside the vehicle if they are connected to an antenna that is installed on the outside of the vehicle. The external antenna must be approved by Mercedes-Benz. Please contact an authorized Mercedes-Benz Light Truck Center for information on the installation of an approved external antenna. Refer to the radio transmitter operation instructions regarding use of an external antenna. 158