2008 Mercedes SL-Class Owner's Manual - Page 432

Practical hints Batteries Charge batteries in accordance with the instructions of the battery charger manufacturer. Reinstall the charged batteries. Follow the previously described steps in reverse order. Reconnecting the batteries Connect positive lead 4 ( page 427) of the consumer battery and positive lead 1 ( page 427) of the starter battery and fasten covers. Connect negative lead 2 ( page 427) of the starter battery. Connect negative lead 5 ( page 427) of the consumer battery. Reinstall the trunk floor. Close trunk luggage cover ( page 211). ! Always connect the batteries in the order described below. Otherwise the vehicle's electronics can be damaged. Turn off all electrical consumers. Install starter battery in the designated location in the engine compartment. Install consumer battery in the designated location in the trunk. Attach supports and brackets. Tighten support and bracket screws. i The following procedures must be carried out following any interruption of battery power (e.g. due to reconnection): Synchronize the ESP® ( page 367). Synchronize side windows ( page 203). ! Never invert the terminal connections! 431