2008 Mercedes R-Class Owner's Manual - Page 56

Getting started Driving Gasoline engine Make sure the automatic transmission is set to P. The transmission position indicator in the multifunction display should be on P. Depress the brake pedal during the starting procedure. Do not depress the accelerator. Press the KEYLESS-GO start/stop button once. The engine starts if the SmartKey with KEYLESS-GO is in the vehicle. Diesel engine Make sure the automatic transmission is set to P. The transmission position indicator in the multifunction display should be on P. Depress the brake pedal during the starting procedure. Do not depress the accelerator. Press the KEYLESS-GO start/stop button once. The engine preglows and starts if the SmartKey with KEYLESS-GO is in the vehicle. Starting difficulties If the engine does not start as described, carry out the following steps: If you are starting the engine with the SmartKey, turn SmartKey in starter switch to position 0 and repeat starting procedure. If you are starting the engine with KEYLESS-GO*: Close any doors that may be open to allow for better detection of the SmartKey with KEYLESS-GO. or Remove KEYLESS-GO start/stop button from starter switch. Start the engine with the SmartKey as radio signals from another source may be interfering with the SmartKey with KEYLESS-GO*. i If the engine is at operating temperature, the time the engine needs to preglow is reduced. 55