2004 Mercedes E-Class Owner's Manual - Page 336

Practical hints What to do if ... Display symbol Display messages Key detected in vehicle! Keyless go Check system Key Do not forget key Possible cause A SmartKey with KEYLESS-GO* left in the vehicle was recognized while locking the vehicle from the outside. The KEYLESS-GO* system is malfunctioning. This display appears (for a maximum of 60 seconds) if the driver's door is opened with the engine shut off and no SmartKey in the starter switch. This message is only a reminder. You have forgotten to remove the SmartKey. There is no additional code available for SmartKey or SmartKey with KEYLESS-GO*. Possible solution Take the SmartKey out of the vehicle. F Visit an authorized Mercedes-Benz Center as soon as possible. Insert SmartKey in the starter switch. Take the SmartKey with KEYLESS-GO* with you when leaving the vehicle. Remove the SmartKey from the starter switch. Visit an authorized Mercedes-Benz Center as soon as possible. Remove key! Replace key 336