2007 Mercedes E-Class Owner's Manual - Page 463

Practical hints Battery Remove SmartKey from starter switch. Vehicles with KEYLESS-GO*: Press the start/stop button until the engine shuts off. Open the driver's door. Open the trunk. Read and observe safety instructions and precautions ( page 331) and ( page 460). Remove the luggage box ( page 433). Disconnect the negative lead from negative terminal 2 ( page 460). Remove cover 1 ( page 460) from the positive terminal. Disconnect the positive lead. Removing the battery Remove the screw-nuts securing the battery. Remove the battery bracket 3 ( page 460). Pull out the battery ventilation hose 4 ( page 460) from the battery (depending on battery arrangement in your vehicle model, the ventilation hose is located either on the left or right side of the battery). Take out the battery. Charging and reinstalling the battery Warning! G Never charge a battery while still installed in the vehicle unless the accessory battery charge unit* approved by Mercedes-Benz is being used. Gases may escape during charging and cause explosions that may result in paint damage, corrosion or personal injury. An accessory battery charge unit* specially adapted for Mercedes-Benz vehicles and tested and approved by Mercedes-Benz is available, permitting the charging of the battery in its installed position. Contact an authorized Mercedes-Benz Center for information and availability. Charge battery in accordance with the separate instructions for the accessory battery charger. 462