2007 Mercedes CLS-Class Owner's Manual - Page 380
2007 Mercedes CLS-Class Manual
Page 380 highlights
Practical hints What to do if ... Display symbol Display messages Possible cause/consequence This display appears (for a maximum of 60 seconds) if the driver's door is opened with the engine turned off and no SmartKey in the starter switch. This message is only a reminder. The SmartKey with KEYLESS-GO* batteries are discharged. The SmartKey with KEYLESS-GO* is not recognized while the engine is running because the SmartKey with KEYLESS-GO* is not in the vehicle there is strong radio-frequency interference Possible solution Take the SmartKey or SmartKey with KEYLESS-GO* with you when leaving the vehicle. F Please don't forget your key Change key batteries Key not recognized Replace the batteries ( page 402). Stop the vehicle 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. Change the position of the SmartKey in the vehicle. Operate the vehicle with the SmartKey in the starter switch if necessary. Key not recognized The SmartKey with KEYLESS-GO* is momentarily not recognized. 379