2009 Mercedes E-Class Owner's Manual - Page 372

Practical hints Jump starting If the battery is discharged, the engine can be started with jumper cables and the fully charged battery of another vehicle or an equivalent starter pack. Observe the following: RAccess that move when an engine is started or running. RShould to the battery is not possible on all vehicles. If you cannot access the battery in your vehicle provide jump start power by an external battery or starter pack. starting should only be performed when the engine and catalytic converter22 are cold. not start the engine if the battery is frozen. Let the battery thaw out first. jump start from batteries with the same voltage rating (12 V). Jump starting with a more powerful battery could damage the vehicle's electrical system, which will not be covered by the Mercedes-Benz Limited Warranty. use jumper cables with sufficient cross-section and insulated terminal clamps. make sure the jumper cables are not on or near pulleys, fans or other parts the battery be drained completely, let the donating power source charge the vehicle for several minutes before reattempting the starting process. X X RJump Make sure the two vehicles do not touch. Switch off all electrical consumers. X Engage the parking brake. X Make sure the automatic transmission is in park position P. 1 Positive terminal of discharged battery 2 Negative terminal of discharged battery 3 Positive terminal of charged battery 4 Negative terminal of charged battery RDo Sedan The battery is located in the trunk underneath the luggage box (Y page 294). X Open the trunk. ROnly ! Never invert the terminal connections! X ROnly RAlways Connect positive terminals 1 and 3 of the batteries with a jumper cable. Clamp the cable to positive terminal 3 of the charged battery first. X Start engine of the vehicle with the charged battery and run at idle speed. X Connect negative terminals 4 and 2 of the batteries with a jumper cable. Clamp the cable to negative terminal 4 of the charged battery first. 22 Vehicles with gasoline engine only. 370