2004 Mercedes S-Class Owner's Manual - Page 45

Getting started Driving Starting with KEYLESS-GO* You can start your vehicle without the SmartKey in the starter switch using the KEYLESS-GO start/stop button on the gear selector lever. The SmartKey with KEYLESS-GO must be located in the vehicle. Make sure the gear selector lever is set to P. Depress the brake pedal during the starting procedure. Do not depress accelerator. The gear selector lever lock is released. Press KEYLESS-GO start/stop button 1 once. The engine starts automatically if the SmartKey with KEYLESS-GO is in the vehicle . For information on turning off the engine with KEYLESS-GO, see "Turning off the engine with KEYLESS-GO*" ( page 54). 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: Start the engine with the SmartKey as radio signals from another source may be interfering with the SmartKey with KEYLESS-GO. 1 KEYLESS-GO start/stop button 44