94 Controls in detailLocking and unlockingFactory 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).
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with KEY-
LESS-GO so when you grasp the driver’s
door handle only the driver’s door and the
fuel filler flap unlocks.
Press and hold buttonsŒ and‹
simultaneously for about five seconds
until battery check lamp5 flashes
twice.
The SmartKey with KEYLESS-GO will
then function as follows:
Unlocking driver’s door and fuel filler
flap
Press buttonŒ once.
Global unlocking
Press buttonŒ twice.
Global locking
Press button‹.
Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
!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.
Check the batteries in the Smart-
Key (
page 91) and replace them if
necessary (
page 355).
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, con-
tact an authorized Mercedes-Benz
Center.
95 Controls in detail
Locking and unlocking
Unlocking and opening the trunk lid
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.
You can unlock and open the trunk lid sep-
arately.
Pull on the handle
or
Press and hold buttonŠ until the
trunk lid unlocks and opens.The trunk can also be opened from the in-
side in an emergency, see “Trunk lid emer-
gency release” (
page 104).
!If you can no longer lock or unlock the
vehicle with the SmartKey with KEY-
LESS-GO, then the batteries in the
SmartKey are discharged, the Smart-
Key with KEYLESS-GO is malfunction-
ing or the vehicle battery is drained.
Check the batteries in the Smart-
Key with KEYLESS-GO (
page 91)
and replace them if necessary
(
page 355).
Use the mechanical key to unlock
the doors (
page 353).
Have the vehicle battery checked
by an authorized Mercedes-Benz
Center.
Use the mechanical key to lock the
doors (
page 353) and the trunk
lid (if applicable) (
page 105).
If the SmartKey with KEYLESS-GO is
malfunctioning, contact an authorized
Mercedes-Benz Center.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Vehicles with trunk lid opening/closing
system*: to stop the opening proce-
dure, press buttonŠ on the Smart-
Key. The trunk lid stops moving.iIf the trunk lid does not open, it is still
locked separately (if applicable)
(page 105).
If the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed. The turn signals will
flash three times to confirm locking.
98 Controls in detailLocking and unlockingThe trunk can also be opened using the
SmartKey (
page 90) or from its inside in
an emergency, see “Trunk lid emergency
release” (
page 104).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 lid release switch with in-
dicator lamp
Pull remote trunk lid release switch1
until the trunk begins to open.
The trunk lid opens. The indicator lamp
in the switch comes on and remains lit
until the trunk is closed.
The trunk can also be opened using the
SmartKey (
page 90) or from its inside in
an emergency, see “Trunk lid emergency
release” (
page 104).
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.iIf the trunk lid does not open, it is still
locked separately (if applicable)
(page 105) or the vehicle is locked
centrally (
page 88).
Vehicles with KEYLESS-GO*: If the ve-
hicle was previously centrally locked,
the trunk lid will lock automatically
when closed (page 91). The turn sig-
nals will flash three times to confirm
locking.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.iIf the trunk lid does not open, it is still
locked separately (if applicable)
(page 105).
If the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 99). The
turn signals will flash three times to
confirm locking.
99 Controls in detail
Locking and unlocking
Closing the trunk
1Handle
Lower trunk lid by pulling firmly on
handle1.
Close trunk lid with hands placed flat
on it.
Trunk lid opening / closing system*
You can open the trunk from the inside if
the vehicle is stationary.
Opening from the inside
A minimum height clearance of 5.90 ft
(1.80 m) is required to open the trunk lid.
The switch for opening and closing the
trunk is located on the driver’s door.
1Remote trunk lid switch with indicator
lamp
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.
Warning!
G
Only drive with the trunk closed as, among
other dangers such as visibility blockage,
exhaust 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 lid will open automatical-
ly if a SmartKey with KEYLESS-GO is
recognized inside the vehicle or in the
trunk.
100 Controls in detailLocking and unlocking
Pull remote trunk lid switch1 until the
trunk begins to open.
The trunk lid opens automatically. The
indicator lamp in the switch comes on
and remains lit until the trunk is closed.The trunk can also be opened using the
SmartKey (
page 90) or from its inside in
an emergency, see “Trunk lid emergency
release” (
page 104).
Limiting opening height of trunk lid
The trunk lid opening height can be limited
when transporting goods on a roof rack
(e.g. presence of an MB sport luggage con-
tainer). When activated, the trunk lid opens
to approximately the height of the roof
edge.
You can activate the limiting opening
height of trunk lid using the control system
(
page 150). Closing from the inside
Press the remote trunk lid switch
(page 99) until the indicator lamp in
the switch goes out and the trunk lid is
closed.
To interrupt the closing procedure:
Release the remote trunk lid switch.
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 re-opens slightly.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance. To stop
the opening procedure, press or pull
the remote trunk lid switch.iIf the trunk lid does not open, it is still
locked separately (if applicable)
(page 105).
If the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 99). The
turn signals will flash three times to
confirm locking.
Warning!
G
Maintain sight of trunk area while operating
the door mounted switch. Monitor the clos-
ing procedure carefully to ensure that no
one is in danger of being injured.
To interrupt the closing procedure, release
the door mounted remote trunk lid switch.
102 Controls in detailLocking and unlockingClosing the trunk from the outside
(vehicles with KEYLESS-GO*)
1Trunk lid closing switch
Make sure you have the SmartKey with
KEYLESS-GO with you.
Press trunk lid closing switch1 brief-
ly.
The trunk lid closes.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 re-opens slightly.
iTo prevent a possible inadvertent lock-
out, the trunk lid will open automatical-
ly if a SmartKey with KEYLESS-GO is
recognized inside the vehicle or in the
trunk.Warning!
G
Only drive with the trunk closed as, among
other dangers such as visibility blockage,
exhaust fumes may enter the vehicle
interior.
Warning!
G
Monitor the closing procedure carefully to
ensure that no one is in danger of being in-
jured. To prevent possible personal injury,
always keep hands and fingers away from
the trunk opening when closing the trunk.
Be especially careful when small children
are around. To stop the closing procedure,
press the remote trunk lid switch (on the
driver’s door), the trunk lid closing
switch1 or the Š button on the Smart-
Key with KEYLESS-GO.
When leaving the vehicle, always remove the
SmartKey from the starter switch, take the
SmartKey with KEYLESS-GO with you, and
lock your vehicle. Do not leave children un-
attended 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.
103 Controls in detail
Locking and unlocking
Closing the trunk and locking the vehi-
cle from the outside (vehicles with KEY-
LESS-GO*)
1KEYLESS-GO* locking/closing switch
You can close the trunk lid and lock the ve-
hicle simultaneously.
Make sure you have the SmartKey with
KEYLESS-GO with you.
Press switch1 briefly.
The vehicle is locked and the trunk lid
closes automatically. The turn signals
flash three times to confirm locking.
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 re-opens slightly.iTo prevent a possible inadvertent lock-
out, the trunk lid will open automatical-
ly if a SmartKey with KEYLESS-GO is
recognized inside the vehicle or in the
trunk.
Warning!
G
Monitor the closing procedure carefully to
ensure that no one is in danger of being in-
jured. To prevent possible personal injury,
always keep hands and fingers away from
the trunk opening when closing the trunk.
Be especially careful when small children
are around. To stop the closing procedure,
press the remote trunk lid switch (on the
driver’s door), the trunk lid closing
switch1, the Š button on the SmartKey
with KEYLESS-GO or the remote trunk lid
opening switch (located on the driver’s
door).
When leaving the vehicle, always remove the
SmartKey from the starter switch, take the
SmartKey with KEYLESS-GO* with you, and
lock your vehicle. Do not leave children un-
attended 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.
106 Controls in detailLocking and unlockingSeparately unlocking the trunk
Pull the mechanical key out of the
SmartKey (
page 353).
Insert the mechanical key in the trunk
lid lock.
Turn the mechanical key completely to
the left to position2, (
page 105).
You can now open the trunk (page 97).
A minimum height clearance of 5.90 ft
(1.80 m) is required to open the trunk lid.
Automatic central locking
The doors and the trunk automatically lock
when the ignition is switched on and the
wheels are turning at vehicle speeds of ap-
proximately 9mph (15km/h) or more.
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.Information on towing the vehicle can be
found in the “Practical hints” section
(
page 381).
You can deactivate the automatic locking
mode over the control system
(page 149).
iUnlocking the trunk with the mechani-
cal key will trigger the anti-theft alarm
system. To cancel the alarm, do one of
the following:
Press button Œ or ‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
iThe doors unlock automatically after an
accident if the force of the impact ex-
ceeds a preset threshold.
The vehicle automatically locks when
the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or
more. You could therefore lock yourself
out when the vehicle
is pushed or towed
is on a test stand