2005 Mercedes SL-Class Owner's Manual - Page 99

Controls in detail Locking and unlocking Global unlocking Press button Œ twice. All turn signals flash once. The locking knobs in the doors move up. The anti-theft alarm system is disarmed. Global locking Press button ‹. All turn signals flash three times. The locking knobs in the doors move down. The anti-theft alarm system is armed. Restoring to factory setting Press and hold buttons Œ and ‹ simultaneously for about six seconds until battery check lamp 5 ( page 94) flashes twice. ! If you can no longer lock or unlock the vehicle with the SmartKey, then the batteries in the SmartKey are discharged, the SmartKey is malfunctioning or the vehicle battery is drained. Check the batteries in the SmartKey ( page 97) and replace them if necessary ( page 377). Use the mechanical key to unlock the driver's door ( page 374). Have the vehicle batteries and their connections checked ( page 401). Use the mechanical key to lock or unlock the doors ( page 376). If the SmartKey is malfunctioning, contact an authorized Mercedes-Benz Center. Checking the batteries Press button ‹ or Œ. Battery check lamp 5 ( page 94) comes on briefly to indicate that the SmartKey batteries are in order. i If battery check lamp 5 does not come on briefly during check, then the SmartKey batteries are discharged. Replace the batteries ( page 377). You can obtain the required batteries at any authorized Mercedes-Benz Center. i If the batteries are checked within signal range of the vehicle, pressing the ‹ or Œ button will lock or unlock the vehicle accordingly. 97