2003 Mercedes E-Class Owner's Manual - Page 345

Practical hints Batteries Warning! G i The following procedures must be carried out following any interruption of battery power (e.g. due to reconnection): Set the clock ( page 136) (vehicles with COMAND*: see COMAND operator's manual). Resynchronize the front seat head restraints ( page 104). Resynchronize the ESP ( page 75). Re-enter the radio code (see radio operating instructions). Resynchronize the side windows ( page 186). Resynchronize the sliding/pop-up roof* ( page 189). Never charge a battery while still installed in the vehicle. Gases may escape during charging and cause explosions that may result in paint damage, corrosion or personal injury. Batteries contain materials that can harm the environment if disposed of improperly. Large 12-volt storage batteries contain lead. Recycling of batteries is the preferred method of disposal. Many states require sellers of batteries to accept old batteries for recycling. Reconnecting the batteries Turn off all electrical consumers. Connect the positive lead and fasten its cover. Connect the negative lead. ! NEVER invert the terminal connections! The battery, its filler caps and the vent tube must always be securely installed when the vehicle is in operation. 345