2003 Mercedes E-Class Owner's Manual - Page 347

Practical hints Jump starting Start the engine of the disabled vehicle. Warning! G Keep flames or sparks away from battery. Do not smoke. Observe all safety instructions and precautions when handling automotive batteries ( page 266). i The message Malfunction - electric consumers switched off may appear in the instrument cluster. It will disappear as soon as the battery is sufficiently charged. 1 Positive terminal of charged battery 2 Positive terminal of discharged battery 3 Vehicle ground 4 Negative terminal of charged battery Connect positive terminals 1 and 2 of the batteries with the jumper cables. Clamp cable to charged battery 1 first. Start engine of the vehicle with the charged battery and run at idle speed. Connect negative terminal 4 of the charged battery and vehicle ground 3 (lock ring of the trunk lid lock) in the trunk with the jumper cable. Clamp cable to charged battery 4 first. Now you can again turn on the electrical consumers. Do not turn on the lights under any circumstances. Remove the jumper cables first from vehicle ground 3 and negative terminal 4 and then from positive terminals 1 and 2. Have the battery checked at the next authorized Mercedes-Benz Center. The battery is located in the trunk on the right hand side underneath the luggage box ( page 325). Only jump start the vehicle from the battery in the trunk. Make sure that the two vehicles do not touch. Turn off all electrical consumers. Apply parking brake. Shift selector lever to position P. ! Vehicles with automatic transmission: Do not tow-start the vehicle. 347