2007 Mercedes C-Class Owner's Manual - Page 385

Practical hints Battery Disconnecting the battery Read and observe safety instructions and precautions ( page 279) and ( page 383). Disconnect the battery negative lead from negative terminal 2. Remove cover 3 from the positive terminal. Disconnect the battery positive lead. Removing the battery Remove the screw-nuts securing the battery. Remove the battery bracket. Pull out the battery ventilation hose 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. Warning! With a disconnected battery G you will no longer be able to turn the SmartKey in the starter switch automatic transmission*: the gear selector lever will remain locked in position P 2 Negative terminal 3 Positive terminal cover ! Always disconnect the battery in the order described below. Otherwise the vehicle's electronics can be damaged. Apply the parking brake ( page 54). Make sure the gear selector lever* is set to position P ( page 153) (manual transmission: to Neutral ( page 149)). Turn off all electrical consumers. Remove SmartKey from starter switch. Open the hood ( page 274). Remove the filter box ( page 383). 384