2003 Mercedes E-Class Owner's Manual - Page 88

Controls in detail Locking and unlocking ! If you can no longer lock or unlock the vehicle with the key, then either the batteries in the SmartKey are discharged or the key is malfunctioning. Check the batteries in the key ( page 88) and replace them if necessary ( page 328). or Use the mechanical key to lock and unlock the doors ( page 327) and the trunk lid ( page 98) as required. If the key is malfunctioning, contact an authorized Mercedes-Benz Center. Checking the batteries Press button ‹ or Œ. Battery check lamp 5 lights up briefly to indicate that the key batteries are in order. Unlocking the trunk lid You can unlock the trunk separately. A minimum height clearance of 5.75 ft. (1.75 m) is required to open the trunk lid. Press and hold button Š until trunk opens. ! If battery check lamp 5 does not light up briefly during check, then the key batteries are discharged. Replace the batteries ( page 329). You can obtain the required batteries at any authorized Mercedes-Benz Center. ! The trunk lid swings upwards automatically. Always make sure that there is sufficient overhead clearance. The trunk can also be opened from its inside in an emergency, see "Trunk lid emergency release" ( page 97). 88