2003 Mercedes E-Class Owner's Manual - Page 309

Practical hints What to do if ... Display Possible cause Key Check battery! Key not recognized! Suggested solution Change the batteries ( page 328). Stop the vehicle as soon as it is safe to do so. Search for the card or continue to operate the vehicle with the key. Otherwise the vehicle cannot be centrally locked nor can the engine be started again after the engine is stopped. Change the position of the card in the vehicle. Operate the vehicle with the key if necessary. F The batteries in the KEYLESS-GO* key are discharged. The KEYLESS-GO* key is not recognized while the engine is running because the card is not in the vehicle there is strong radio-frequency interference The KEYLESS-GO* key is momentarily not recognized. ì Function Not available! This display appears if button ì or í on the multifunction steering wheel is pressed and the vehicle is not equipped with a telephone. 309