2007 Mercedes S-Class Owner's Manual - Page 641

Practical hints Jump starting Make sure the two vehicles do not touch. Secure vehicle in place with electric parking brake. Shift the automatic transmission to P. Turn off all electrical consumers, except hazard warning flashers or work lights. Open the hood ( page 492). Start the engine of the vehicle with the charged battery and run at idle speed. 1 Positive terminal of your vehicle's battery 2 Positive terminal of other vehicle's battery 3 Negative terminal of other vehicle's battery 4 Negative clamp Warning! G Keep flames or sparks away from battery. Do not smoke. Observe all safety instructions and precautions when handling automotive batteries ( page 634). Jump starting should only be performed on the starter battery. The starter battery is located in the engine compartment on the passenger side ( page 634). i Vehicles with KEYLESS-GO: remove the KEYLESS-GO button ( page 316) and use the SmartKey with KEYLESS-GO like a normal SmartKey. 640