2007 Mercedes S-Class Owner's Manual - Page 593

Practical hints What to do if ...? Display Key not recognized Possible cause/consequence The SmartKey with KEYLESS-GO* is not recognized while the engine is running because the SmartKey with KEYLESS-GO* is not in the vehicle. Possible solution Stop the vehicle in a safe location as soon as it is safe to do so. Search for the SmartKey. Otherwise the vehicle cannot be centrally locked nor can the engine be started again after the engine is stopped. The SmartKey with KEYLESS-GO* is not recognized while the engine is running because there is strong radio-frequency interference. Stop the vehicle in a safe location as soon as it is safe to do so. Remove KEYLESS-GO* button from over starter switch ( page 316). Operate the vehicle with the SmartKey in the starter switch. The SmartKey with KEYLESS-GO* is momentarily not recognized. Change the position of the SmartKey in the vehicle. If necessary, operate vehicle using SmartKey with KEYLESS-GO* in starter switch under KEYLESS-GO* button ( page 316). 592