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Controls in detail
Locking and unlocking
Factory setting
̈ Global unlocking: Press button Œ.
ț All turn signal lamps flash once.
ț An acoustic signal sounds once
(if equipped and feature activated).
ț The locking knobs in the doors
move up.
ț The anti-theft alarm system is dis-
armed.
The vehicle will lock again automatically
and rearm the anti-theft alarm system
within approximately 40 seconds of un-
locking if:
ț neither a door nor the trunk is opened
ț the SmartKey is not inserted in the
starter switch
ț the central locking/unlocking switch is
not activated
i
USA only:
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interfer-
ence, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
i
Canada only:
This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
i
You can also open and close the door win-
dows and tilt/sliding sunroof, or the tilt/ sliding
panel* using the SmartKey (
୴ page 385).
!
If you cannot lock or unlock the vehicle with
the SmartKey, then either the batteries in the
SmartKey are discharged, the SmartKey is mal-
functioning or the vehicle batteries are drained.
ț Check the batteries in the SmartKey and re-
place them if necessary (
୴ page 676).
ț Use the mechanical key to unlock the driv-
er’s door (
୴ page 671) and the trunk
(
୴ page 672).
ț Use the mechanical key to lock the driver’s
door (
୴ page 672) and the trunk
(
୴ page 484).
ț Have the vehicle batteries and their connec-
tions checked (
୴ page 692).
If the SmartKey is malfunctioning, contact Road-
side Assistance or an authorized Mercedes-Benz
Center.
i
Your vehicle may be equipped with an
acoustic lock and unlock confirmation signal fea-
ture. If your vehicle is equipped with this feature
and the feature is activated, an acoustic signal
will sound when the vehicle is locked or unlocked
using the SmartKey.
To determine whether or not your vehicle is
equipped with this feature, contact an autho-
rized Mercedes-Benz Center. If equipped and
you wish to activate or deactivate the feature, or
adjust its signal volume, also contact an autho-
rized Mercedes-Benz Center.