2003 Mercedes SL-Class Owner's Manual - Page 269

Practical hints What to do if ... Left display Right display Chip card Check battery! Chip card not recognised! Possible cause The KEYLESS-GO* card batteries are discharged. The KEYLESS-GO* card 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* card is momentarily not recognized. Possible solution Change the batteries ( page 294). 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 Chip card still in vehicle! KEYLESS-GO Visit workshop! A KEYLESS-GO* card left in the vehicle was recognized while locking the vehicle from the outside. The KEYLESS-GO* system is malfunctioning. Take the card out of the vehicle. Visit an authorized Mercedes-Benz Center as soon as possible. 269