2004 Mercedes G-Class Owner's Manual - Page 312

Practical hints Battery Disconnecting the battery i With a disconnected battery you will no longer be able to turn the SmartKey in the starter switch the gear selector lever will remain locked in position P Reconnecting the battery Turn off all electrical consumers. Connect the positive lead and fasten its cover. Connect the negative lead. i The following procedures must be carried out following any interruption of battery power (e.g. due to reconnection): Set the clock (see COMAND operator's manual). Resynchronize the front seat head restraints and seat adjustment fore, aft ( page 95). Synchronize the ESP ( page 263). ! Never loosen or detach battery terminal clamps while the engine is running or the SmartKey is in the starter switch. Otherwise the alternator and other electronic components could be severely damaged. Turn off all electrical consumers. Disconnect the battery negative lead. Remove the cover from the positive terminal. Disconnect the battery positive lead. Remove the breather hose from the battery. ! Never invert the terminal connections. Install the breather hose. ! The battery, its filler caps and the vent tube must always be securely installed when the vehicle is in operation. 312