2006 Mercedes CLS-Class Owner's Manual - Page 387
2006 Mercedes CLS-Class Manual
Page 387 highlights
Practical hints What to do if ... Display symbol Display messages Key Check battery Key not recognized Possible cause/consequence 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 Change the batteries ( page 408). 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. F Key not recognized The SmartKey with KEYLESS-GO* is momentarily not recognized. 386
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