2004 Mercedes E-Class Owner's Manual - Page 94

Controls in detail Locking and unlocking Factory setting Global unlocking Grasp the door handle. The vehicle will lock again automatically within approximately 40 seconds if neither door nor trunk is opened. Global locking Press lock button at door handle ( page 54) or trunk lid ( page 96). Use the mechanical key to unlock the doors ( page 353). Have the vehicle batteries and their connections checked. Use the mechanical key to lock the doors ( page 353) and the trunk lid (if applicable) ( page 105). If the SmartKey is malfunctioning, contact an authorized Mercedes-Benz Center. Selective setting If you frequently travel alone, you may wish to reprogram the SmartKey with KEYLESS-GO so when you grasp the driver's door handle only the driver's door and the fuel filler flap unlocks. Press and hold buttons Œ and ‹ simultaneously for about five seconds until battery check lamp 5 flashes twice. The SmartKey with KEYLESS-GO will then function as follows: Unlocking driver's door and fuel filler flap Press button Œ once. Global unlocking Press button Œ twice. Global locking Press button ‹. Restoring to factory setting Press and hold buttons Œ and ‹ simultaneously for about six seconds until battery check lamp 5 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 91) and replace them if necessary ( page 355). 94