2008 Mercedes CLK-Class Owner's Manual - Page 466

Practical hints Battery ! Always disconnect the battery in the order described below. Otherwise the vehicle's electronics can be damaged. Apply the parking brake ( page 59). Make sure gear selector lever is set to position P ( page 174). Turn off all electrical consumers. Remove SmartKey from starter switch. 2 Negative terminal 3 Positive terminal cover Disconnecting the battery Vehicles with KEYLESS-GO*: Press the start/stop button until the engine shuts off. Open the driver's door. Warning! With a disconnected battery you will no longer be able to turn the SmartKey in the starter switch and pressing the KEYLESS-GO* start/stop button on the gear selector lever will have no effect the gear selector lever will remain locked in position P Removing the battery Remove the screw securing the battery. Remove the battery support and bracket. Pull out the 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. G Open the hood ( page 323). Remove the filter box ( page 464). Read and observe safety instructions and precautions ( page 464). Disconnect the battery negative lead from negative terminal 2. Remove cover 3 from the positive terminal. Disconnect the battery positive lead. 465