Page 112 of 521

111 Controls in detail
Locking and unlocking
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO come
with two SmartKeys with KEYLESS-GO,
each with remote control and a removable
mechanical key. The locking tabs for the
mechanical key portion of the two Smart-
Keys with KEYLESS-GO are a different col-
or to help distinguish each SmartKey with
KEYLESS-GO unit.
The function of the SmartKey overrules the
KEYLESS-GO function.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked every time you pull an outside
door handle.
If the SmartKey with KEYLESS-GO is valid,
your vehicle unlocks
the doors
the trunk
the fuel filler flap
SmartKey with KEYLESS-GO 1‹ Lock button
2Š Unlock button for the trunk
3Mechanical key locking tab
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 91)
iWhen any outside door handle other
than the driver’s outside door handle is
pulled, the vehicle is centrally un-
locked.
Warning!
G
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO with you and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. It is possible for children
to open a locked door from the inside, which
could result in an accident and/or serious
personal injury.!To prevent possible malfunction, avoid
exposing the SmartKey with
KEYLESS-GO to high levels of electro-
magnetic radiation.
Page 115 of 521

114 Controls in detailLocking and unlockingFactory settingGlobal unlocking
Pull an outside door handle.
All turn signal lamps flash once.
An acoustic signal sounds once
(if equipped and feature activated).
The locking knobs in the doors
move up.
The anti-theft alarm system is dis-
armed.
The vehicle will lock again automatically
and reactivate the anti-theft alarm system
within approximately 40 seconds if:
neither a door nor the trunk is opened
the central locking switch is not acti-
vatedGlobal locking
Press lock button on an outside door
handle (
page 64) or trunk lid
(
page 117).
All turn signal lamps flash three
times.
An acoustic signal sounds three
times (if equipped and feature acti-
vated).
The locking knobs in the doors
move down.
The anti-theft alarm system is
armed.
iYour vehicle may be equipped with an
acoustic lock and unlock confirmation
signal feature. If your vehicle is
equipped with this feature and the fea-
ture is activated, an acoustic signal will
sound when the vehicle is locked or un-
locked using the SmartKey with
KEYLESS-GO.
To determine whether or not your vehi-
cle is equipped with this feature, con-
tact an authorized Mercedes-Benz
Center. If equipped and you wish to ac-
tivate or deactivate the feature, or ad-
just its signal volume, also contact an
authorized Mercedes-Benz Center.
Page 118 of 521
117 Controls in detail
Locking and unlocking
Global locking using the lock button on
the trunk lid
1Lock button
Press lock button1 on the trunk lid.
All turn signal lamps flash three
times.
An acoustic signal sounds three
times (if equipped and feature acti-
vated).
For more information, see “Factory
setting” (
page 114).
The locking knobs in the doors
move down.
The anti-theft alarm system is
armed.
iTo prevent a possible inadvertent lock-
out, the trunk will open automatically if
a SmartKey with KEYLESS-GO is recog-
nized inside the vehicle or in the trunk.
iIf the vehicle was previously centrally
locked with KEYLESS-GO, the trunk will
lock automatically after closing it.
To confirm locking all turn signal lamps
flash three times.iYou can also lock the vehicle using the
lock button on an outside door handle
(page 64) or KEYLESS-GO locking/
closing switch (
page 126).
Page 119 of 521

118 Controls in detailLocking and unlockingUnlocking and opening the trunk
You can unlock and open the trunk sepa-
rately.
A minimum height clearance of 5.90 ft
(1.80 m) is required to open the trunk lid.
The handle is located in the rear license
plate recess.
Pull on the handle
or
Press and hold buttonŠ until the
trunk lid unlocks and begins to open.Loss of the SmartKey with KEYLESS-GO
If you lose your SmartKey with
KEYLESS-GO, you should do the following:
Have the SmartKey with KEYLESS-GO
deactivated by an authorized
Mercedes-Benz Center.
Report the loss immediately to your car
insurance company.
Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Vehicles with trunk opening/closing
system*: to stop the opening proce-
dure, press buttonŠ. The trunk lid
stops moving.iIf the trunk does not open, it is still
locked separately (
page 128).
iIf the vehicle was previously centrally
locked with KEYLESS-GO, the trunk will
lock automatically after closing it.
To confirm locking all turn signal lamps
flash three times.
Page 121 of 521

120 Controls in detailLocking and unlockingOpening the trunk
Opening the trunk from the outside
A minimum height clearance of 5.90 ft
(1.80 m) is required to open the trunk lid.
The handle is located above the rear li-
cense plate recess.
In vehicles without KEYLESS-GO*: The ve-
hicle must be unlocked.
Pull on the handle.
The trunk opens.Opening the trunk from the inside
You can open the trunk from the inside if
the vehicle is stationary.
A minimum height clearance of 5.90 ft
(1.80 m) is required to open the trunk lid.
The switch is located on the driver’s door.
1Remote trunk switch with indicator
lamp
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.iIf the trunk does not open, it is still
locked separately (
page 128).
iThe trunk can also be opened using
button Š on the SmartKey or
SmartKey with KEYLESS-GO* or from
its inside in an emergency, see “Trunk
emergency release” (
page 127).
iIf the vehicle was previously centrally
locked, the trunk will lock automatical-
ly after closing it.
To confirm locking all turn signal lamps
flash three times.
Page 122 of 521

121 Controls in detail
Locking and unlocking
1Remote trunk switch with indicator
lamp (vehicles with trunk open-
ing/closing system*)
Pull remote trunk switch1 until the
trunk begins to open.
The trunk opens. The indicator lamp in
the switch comes on and remains lit
until the trunk is closed.
Closing the trunk
Closing the trunk from the inside auto-
matically*
In vehicles with trunk opening/closing sys-
tem* you can close the trunk from the in-
side using the remote trunk switch.
Press remote trunk switch
(page 121) until the indicator lamp in
the switch goes out and the trunk is
closed.
To interrupt the closing procedure:
Release the remote trunk switch.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Vehicles with trunk opening/closing
system*: To stop the opening proce-
dure, press or pull remote trunk
switch1.iIf the trunk does not open, it is still
locked separately (
page 128).
iThe trunk can also be opened using
button Š on the SmartKey or
SmartKey with KEYLESS-GO* or from
its inside in an emergency, see “Trunk
lid emergency release” (
page 127).
iYou can also close the trunk by hand.
Page 123 of 521

122 Controls in detailLocking and unlocking
If the trunk lid comes into contact with an
object while closing (e.g. luggage that has
been piled too high), the closing procedure
is stopped and the trunk reopens slightly.Closing the trunk from the outside
manually
1Handle
2Handles
Lower trunk lid by pulling firmly on
handle1 or handles2.
Close trunk with hands placed flat on
trunk lid.
Warning!
G
Maintain sight of trunk area while operating
the door mounted switch. Monitor the clos-
ing procedure carefully to make sure that no
one is in danger of being injured.
To interrupt the closing procedure, release
the door mounted remote trunk switch.
Even with the SmartKey or SmartKey with
KEYLESS-GO* removed from the starter
switch or the SmartKey with KEYLESS-GO*
removed from the vehicle, the remote trunk
switch can be operated. Therefore, do not
leave children unattended in the vehicle, or
with access to an unlocked vehicle. Unsu-
pervised use of vehicle equipment may
cause an accident and/or serious personal
injury.
Warning!
G
Only drive with the trunk closed as, among
other dangers such as blocked visibility, ex-
haust fumes may enter the vehicle interior.
Page 124 of 521

123 Controls in detail
Locking and unlocking
Closing the trunk from the outside
(vehicles without KEYLESS-GO*)
In vehicles with trunk opening/closing sys-
tem* you can close the trunk separately
from the outside using the trunk closing
switch.
1Trunk closing switch
Press trunk closing switch1 briefly.
The trunk closes.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
opening when closing the trunk. Be espe-
cially careful when small children are
around.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.Warning!
G
Only drive with the trunk closed as, among
other dangers such as blocked visibility, ex-
haust fumes may enter the vehicle interior.
iDo not place the SmartKey in the open
trunk. You may lock yourself out.
Vehicles with KEYLESS-GO*:
To prevent a possible inadvertent lock-
out, the trunk will open automatically if
a SmartKey with KEYLESS-GO is recog-
nized inside the vehicle or in the trunk.iIf the vehicle was previously centrally
locked, the trunk will lock automatical-
ly after closing it (
page 121).
To confirm locking all turn signal lamps
flash three times.
iYou can also close the trunk by hand.