2011 Mercedes R-Class Owner's Manual - Page 78
2011 Mercedes R-Class Manual
Page 78 highlights
76 SmartKey This may impair the functioning of KEYLESSGO. RTo open or close the vehicle, the KEYLESSGO key should be no more than 3 ft (1 m) from the door or tailgate. RWhen the vehicle is parked for more than 72 hours, the KEYLESS-GO function is deactivated. Pull one of the outer door handles and turn on the ignition to reactivate the KEYLESS-GO function. RIf the KEYLESS-GO key is not near the vehicle, it is possible that the system may not recognize it. In this case, the vehicle cannot be locked or started with KEYLESSGO. RIf the KEYLESS-GO key has been removed from the vehicle (e.g. if a passenger leaves the vehicle with the KEYLESS-GO key): - while someone is holding the Start/Stop button or attempting to lock the vehicle with the outer door handle, the message Key not detected appears in the multifunction display - while someone is holding the Start/Stop button or attempting to lock the vehicle with the outer door handle, the message Key not detected appears in the multifunction display - while the engine is running, the red message Key not detected appears in the multifunction display as you pull away. Find the KEYLESS-GO key or change its current position immediately (e.g. place it on the front-passenger seat or carry it in your shirt pocket.) RIf you have started the engine using the Start/Stop button, you can turn if off again by: - pressing the Start/Stop button again - inserting the KEYLESS-GO key in the ignition lock when the vehicle is stationary and the automatic transmission is in parking position P. RYou may accidentally unlock the vehicle if the KEYLESS-GO key is within 3 ft (1 m) of the vehicle and: - an outer door handle comes into contact with water or - you are cleaning an outer door handle. RNote that the engine can be started by any vehicle occupant if a KEYLESS-GO key is in the vehicle. Option 1: there is a KEYLESS-GO key in the vehicle and a KEYLESS-GO key outside the vehicle. If you leave the KEYLESS-GO key behind when you get out and lock the vehicle, a message does not appear in the multifunction display. Option 2: there is a KEYLESS-GO key in the vehicle but no KEYLESS-GO key outside the vehicle. When you get out and try to lock the vehicle, the message Key still in vehicle appears in the multifunction display. The vehicle is not locked in this case. When starting the engine and while driving, KEYLESS-GO also checks whether a valid key is in the vehicle by periodically establishing radio contact. Opening and closing X To unlock the vehicle: touch the inner surface of the door handle. X To lock the vehicle: press locking button :.