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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 lock-
ing 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
(
୴ page 94) flashes twice.
Checking the batteries
̈ Press button ‹ or Œ.
Battery check lamp 5 (
୴ page 94)
comes on briefly to indicate that the
SmartKey batteries are in order.
!
If you can no longer lock or unlock the
vehicle with the SmartKey, then the
batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.
ț Check the batteries in the
SmartKey (
୴ page 97) and replace
them if necessary (
୴ page 377).
ț Use the mechanical key to unlock
the driver’s door (
୴ page 374).
ț Have the vehicle batteries and their
connections checked
(
୴ page 401).
ț Use the mechanical key to lock or
unlock the doors (
୴ page 376).
If the SmartKey is malfunctioning, con-
tact an authorized Mercedes-Benz
Center.
i
If battery check lamp 5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
ț Replace the batteries (୴ page 377).
You can obtain the required batteries
at any authorized Mercedes-Benz
Center.
i
If the batteries are checked within sig-
nal range of the vehicle, pressing
the ‹ or Œ button will lock or
unlock the vehicle accordingly.