2003 Mercedes E-Class Owner's Manual - Page 343

Practical hints Batteries Batteries Your vehicle is equipped with two batteries: Auxiliary battery (back-up battery; enables vehicle to shut down electrical systems in a controlled manner should the main battery fail; auxiliary battery is located in the engine compartment) The main battery (battery for starter and electrical consumers; located in the trunk). The main battery is in the trunk under the luggage box. Remove the luggage box ( page 325). Warning! G Failure to follow these instructions can result in severe injury or death. Never lean over batteries while connecting, you might get injured. Battery fluid contains sulfuric acid. Do not allow this fluid to come in contact with eyes, skin or clothing. In case it does, immediately flush affected area with water and seek medical help if necessary. Main battery in trunk A battery will also produce hydrogen gas, which is flammable and explosive. Keep flames or sparks away from battery, avoid improper connection of jumper cables, smoking etc. 1 Negative terminal 2 Positive terminal Warning! G Jump starting must only be done using the main battery in the trunk. 343