Page 104 of 498

102 Controls in detailLocking and unlockingSelective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
K E Y L E S S - G O s o w h e n y o u , p u l l t h e d r i v e r ’ 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
Pull the driver’s door handle.
All turn signal lamps flash once. The
locking knob in the driver’s door moves
up. The anti-theft alarm system is
disarmedGlobal unlocking
Pull the door handle on the passenger
side.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system is
disarmed
Global locking
Press lock button at door handle or
trunk lid.
All turn signal lamps flash three times.
The locking knobs in the doors move
down. The anti-theft alarm system is
armed.Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
iYou can also lock the vehicle using the
lock button at trunk lid (
page 103).
!If you can no longer lock or unlock the
vehicle with the SmartKey with
KEYLESS-GO, then the batteries in the
SmartKey are discharged, the
SmartKey with KEYLESS-GO is mal-
functioning or the vehicle battery is
drained.
Check the batteries in the
SmartKey (
page 103) and re-
place them if necessary
(
page 402).
Use the mechanical key to unlock
the driver’s door (
page 397) and
the trunk (
page 398).
Page 105 of 498

103 Controls in detail
Locking and unlocking
Checking the batteries
Press button‹ orŒ.
Battery check lamp5 comes on
briefly to indicate that the SmartKey
batteries are in order.Global locking using the lock button at
trunk lid
1Lock button at trunk
Press lock button1 at the trunk lid.
Have the vehicle battery and the
battery connections checked
(page 420).
Use the mechanical key to lock the
driver’s door (
page 398).
If the SmartKey with KEYLESS-GO is
malfunctioning, contact an authorized
Mercedes-Benz Center.
iIf battery check lamp5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 402).
You can obtain the required batteries
at any authorized Mercedes-Benz
Center.
iIf the batteries are checked within sig-
nal range of the vehicle, pressing
the‹ orŒ button will lock or
unlock the vehicle accordingly.
iTo prevent a possible inadvertent
lockout, the trunk lid will open
automatically if a SmartKey with
KEYLESS-GO* is recognized inside the
vehicle or in the trunk.
Page 106 of 498
104 Controls in detailLocking and unlocking
All turn signal lamps flash three times.
The locking knobs in the doors move
down. The anti-theft alarm system is
armed.Unlocking and opening the trunk lid
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The handle is located in the rear license
plate recess.
1Handle
Pull on handle1.
The trunk opens.
or
Press and hold button Š until the
trunk unlocks and begins to open.The trunk can also be opened from its in-
side in an emergency, see “Trunk lid emer-
gency release” (
page 109).
iYou can also lock the vehicle using the
lock button at outside door handle
(page 58).
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.iIf the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 107). The
turn signals will flash three times to
confirm locking.
Page 107 of 498

105 Controls in detail
Locking and unlocking
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
replacement.
Opening the doors from the inside
You can open a locked door from the in-
side. Open doors only when conditions are
safe to do so.
1Locking knob
2Inside door handle
Pull on door handle2.
If door was locked, locking knob1 will
move up.
iIf the vehicle has previously been
locked from the outside with the
SmartKey, opening a door from the in-
side will trigger the anti-theft alarm sys-
tem.
To cancel the alarm, do one of the
following:
With the SmartKey
Insert the SmartKey in the starter
switch.
Press button‹ orŒ on the
SmartKey.
With KEYLESS-GO*
Pull the outside door handle.
Press the KEYLESS-GO* start/stop
button.
Page 108 of 498
106 Controls in detailLocking and unlocking
Opening the trunk
Opening the trunk from outside
(vehicles without KEYLESS-GO*)
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The handle is located in the rear license
plate recess.
1Handle
Pull on handle1.
The trunk lid unlocks and begins to
open.
The trunk can also be opened using
buttonŠ on the SmartKey or from its
inside in an emergency, see “Trunk lid
emergency release” (
page 109).
iIf you open a door, the side windows on
that side of the vehicle will lower slight-
ly. The windows close again when you
close the door.
iThe vehicle must be unlocked.!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Page 109 of 498

107 Controls in detail
Locking and unlocking
Opening the trunk from the inside
You can open the trunk from the inside if
the vehicle is stationary.
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The remote trunk lid switch is located on
the driver’s door.
1Remote trunk lid switch with indicator
lamp
Press remote trunk lid switch1 until
the trunk begins to open.
The indicator lamp in the switch
remains lit as long as the trunk is open.
The trunk can also be opened using
buttonŠ on the SmartKey or from its
inside in an emergency, see “Trunk lid
emergency release” (
page 109).
Closing the trunk
Depending on production date, your
vehicle is equipped with either trunk
design A or B.Trunk design A1Handle
Lower trunk lid by pulling firmly on
handle1.
Close trunk lid with hands placed flat
on the trunk lid.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.iIf the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 107). The
turn signals will flash three times to
confirm locking.
Page 110 of 498

108 Controls in detailLocking and unlockingTrunk design B1Handle
2Handles
Lower trunk lid by pulling firmly on
handle1 or handles2.
Close trunk lid with hands placed flat
on the trunk lid.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
lid 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. It is possible for children
to open a locked door from the inside, which
could result in an accident and/or serious
personal injury.Warning!
G
Only drive with the trunk closed. Among oth-
er dangers, such as your view being blocked,
exhaust fumes may enter the vehicle
interior.
iDo not place the SmartKey in the open
trunk. You may lock yourself out.iVehicles 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.
Page 111 of 498

109 Controls in detail
Locking and unlocking
Trunk lid emergency release
The emergency release button is located
on the inside of the trunk lid.
1Emergency release button
Briefly press emergency release
button1.
The trunk lid unlocks and the trunk lid
opens.Illumination of the emergency release but-
ton:
The button will flash for 30 minutes
after opening the trunk.
The button will flash for 60 minutes
after closing the trunk.
!The trunk lid swings open upwards au-
tomatically.
iThe emergency release button unlocks
and opens the trunk while the vehicle is
standing still or in motion.iThe emergency release button does
not open the trunk lid if the vehicle
battery is discharged or disconnected.
iIf the emergency release button is
pressed and the vehicle was centrally
locked, the exterior lamps will flash and
the alarm will sound as the trunk lid
opens. To cancel the alarm, do one of
the following:
press buttonŒ or‹ on the
SmartKey.
insert the SmartKey in the starter
switch.
In vehicles with KEYLESS-GO*:
pull the outside door handle.
press the start/stop button.