2005 Mercedes SLK-Class Owner's Manual - Page 93

Controls in detail Locking and unlocking Global unlocking Press button Œ twice. All turn signal lamps flash once. The lock buttons on the doors move up. The anti-theft alarm system is disarmed ( page 85). Global locking Press button ‹. With the hood, trunk and all doors closed, all turn signal lamps flash three times. The locking knobs on the doors move down. The anti-theft alarm system is armed now ( page 85). Restoring to factory setting Press and hold buttons Œ and ‹ simultaneously for about six seconds. Battery check lamp 5 flashes twice. The SmartKey is set to the factory setting again. ! 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 and replace them if necessary ( page 378). Use the mechanical key to lock/unlock the driver's door ( page 374). Use the mechanical key to lock/unlock the trunk lid as required ( page 375). Have the vehicle battery and the battery connections checked ( page 396). If the SmartKey is malfunctioning, contact an authorized Mercedes-Benz Center. Unlocking the trunk lid You can unlock and open the trunk lid separately. Press and hold button Š on the SmartKey until the trunk lid unlocks. For opening the trunk, see "Opening the trunk" ( page 95). Checking the batteries Press button ‹ or Œ. Battery check lamp 5 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 378). You can obtain the required batteries at any authorized Mercedes-Benz Center. 93