116 Controls in detailLocking and unlocking
when pressing the KEYLESS-GO
start/stop button or trying to lock
the vehicle with the outside door
handle the message
Key not rec-
ognized
appears in the multifunc-
tion display
with the engine running, the mes-
sage
Key not recognized
appears
in the multifunction display while
driving off.
Find the SmartKey with KEYLESS-GO or
change its present location immediate-
ly (e.g. place it on the front passenger
seat or insert it in shirt pocket).
If you have started the engine with the
KEYLESS-GO start/stop button, you
can turn it off again with:
the KEYLESS-GO start/stop button
the SmartKey with KEYLESS-GO in-
serted in the starter switch, when
the automatic transmission is in
positionP
Remember that the engine can be
started by anyone with a SmartKey
with KEYLESS-GO that is left inside the
vehicle.
Possibility 1: (One SmartKey with
KEYLESS-GO in the vehicle, one
SmartKey with KEYLESS-GO outside
the vehicle):
If you leave the SmartKey with
KEYLESS-GO behind when exiting and
locking the vehicle, no message
appears in the multifunction display.
Possibility 2: (One SmartKey with
KEYLESS-GO in the vehicle, no
SmartKey with KEYLESS-GO outside
the vehicle):
When exiting and trying to lock the ve-
hicle, the message
Key still in ve-
hicle
appears in the multifunction
display. The vehicle will not be locked.Factory setting
Global unlocking
Pull an outside door handle.
All turn signal lamps flash once.
An acoustic signal sounds once.
The locking knobs in the doors
move up.
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 if:
neither a door nor the trunk is opened
the central locking switch is not acti-
vated
i
When unlocking or locking the vehicle with
the SmartKey or with the KEYLESS-GO function
an acoustic signal sounds. The acoustic signal is
activated at the factory. If you wish to deactivate
the feature, or adjust its signal volume, contact
an authorized Mercedes-Benz Center.
117 Controls in detail
Locking and unlocking
Global locking
Press lock button on an outside door
handle (
page 65).
With the trunk and all doors closed:
All turn signal lamps flash three
times.
An acoustic signal sounds three
times.
The locking knobs in the doors
move down.
The anti-theft alarm system is
armed.Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so when you pull the driver’s
outside door handle, only the driver’s door
and the fuel filler flap unlocks.
Press and hold buttonsŒ and‹
simultaneously for about 5 seconds un-
til battery check lamp5 (
page 114)
flashes twice.
The SmartKey with KEYLESS-GO will
then function as follows:
Unlocking driver’s door and fuel filler
flap
Pull the driver’s outside door handle.
All turn signal lamps flash once.
An acoustic signal sounds once.
The locking knob in the driver’s
door moves up.
The anti-theft alarm system is dis-
armed.Global unlocking
Pull any outside door handle other than
the driver’s outside door handle.
All turn signal lamps flash once.
An acoustic signal sounds once.
The locking knobs in the doors
move up.
The anti-theft alarm system is dis-
armed.
118 Controls in detailLocking and unlockingGlobal locking
Press lock button on an outside door
handle (
page 65).
With the trunk and all doors closed:
All turn signal lamps flash three
times.
An acoustic signal sounds 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 5 seconds un-
til battery check lamp5 (
page 114)
flashes twice.Global locking using the KEYLESS-GO
lock button on the trunk lid*
Depending on production date, your vehi-
cle may be equipped with the KEYLESS-GO
lock button on trunk lid.
1KEYLESS-GO lock button on trunk lid
Press lock button1 on the trunk lid.
With the trunk and all doors closed:
All turn signal lamps flash three
times.
An acoustic signal sounds three
times.
The locking knobs in the doors
move down.
The anti-theft alarm system is
armed.
i
You can also lock the vehicle using the
KEYLESS-GO lock button on trunk lid (depending
on vehicle production date) or, vehicles with
trunk opening/closing system*, KEYLESS-GO
locking/ closing switch (
page 121).
i
To prevent a possible inadvertent lockout,
the trunk will open automatically if a SmartKey
with KEYLESS-GO is recognized inside the vehi-
cle or in the trunk.
i
You can also lock the vehicle using the lock
button on an outside door handle (
page 65) or,
vehicles with trunk opening/closing system*,
KEYLESS-GO locking/ closing switch
(
page 121).
120 Controls in detailLocking and unlocking
Front doors
Pull on door handle2 on the respec-
tive front door to open door.
If door was locked, locking knob1 will
move up.
Rear doors
Pull up locking knob1 on the
respective rear door to unlock door.
Pull on door handle2 on the
respective rear door to open door.
Opening the trunk
You can open the trunk if the vehicle is sta-
tionary.
A minimum height clearance of 5.90 ft
(1.80 m) is required to open the trunk lid.
i
If the vehicle has previously been locked
with the SmartKey or KEYLESS-GO*, opening a
door from the inside will trigger the anti-theft
alarm system.
To cancel the alarm, do one of the following:
Press button Œ or ‹ on the SmartKey
or SmartKey with KEYLESS-GO*.
Insert the SmartKey or SmartKey with
KEYLESS-GO* in the starter switch.
In vehicles with KEYLESS-GO*
Press the KEYLESS-GO* start/stop button
(page 39).
The SmartKey with KEYLESS-GO* must be
inside the vehicle.
Pull an outside door handle.
The SmartKey with KEYLESS-GO* must be
within 3 ft (1 m) of the vehicle.
i
If you hear a warning signal you have forgot-
ten to switch off the headlamps before opening
the driver’s door.
In addition the message
Switch off lights
appears in the multifunction display.
Switch off the headlamps.
Warning!
G
Make sure the trunk is closed when the en-
gine is running and while driving. Among
other dangers, such as blocked visibility, ex-
haust fumes may enter the vehicle interior.
These fumes are damaging to your health.!
The trunk lid swings open upwards automat-
ically. Always make sure there is sufficient over-
head clearance.
121 Controls in detail
Locking and unlocking
Opening the trunk from the outside
1Trunk lid handle
Press and hold buttonŠ on the
SmartKey or SmartKey with
KEYLESS-GO* until trunk unlocks and
begins to open.
or
Pull on handle1.
In vehicles without KEYLESS-GO*: The
vehicle must be unlocked.Opening the trunk from the inside
Vehicles without trunk opening/closing
system*1Remote trunk opening switch
Vehicles with trunk opening/closing sys-
tem*1Remote trunk opening/closing* switch
Pull switch1 until the trunk begins to
open.
The trunk opens. The indicator lamp on
the switch comes on and remains lit
until the trunk is closed.
i
If the trunk does not open, it is still locked
separately (
page 126).
!
Vehicles with trunk opening/closing sys-
tem*: To stop the opening procedure, press
buttonŠ on the SmartKey or SmartKey with
KEYLESS-GO*.
i
If the trunk does not open, it is still locked
separately (
page 126).
!
Vehicles with trunk opening/closing sys-
tem*: To stop the opening procedure, press or
pull the remote trunk opening/closing* switch.
122 Controls in detailLocking and unlockingClosing the trunk Closing trunk from the outside
manually
Depending on production date, your vehi-
cle is equipped with two or three handles.
1Handles
Lower trunk lid by pulling firmly on
handles1.
Close trunk with hands placed flat on
trunk lid.
Warning!
G
Make sure the trunk is closed when the en-
gine is running and while driving. Among
other dangers, such as blocked visibility, ex-
haust fumes may enter the vehicle interior.
These fumes are damaging to your health.i
Do not place the SmartKey in the open
trunk. You may lock yourself out.
i
If the vehicle was previously centrally
locked, the trunk will lock automatically after
closing it. All turn signal lamps flash three times
to confirm locking.
Vehicles with KEYLESS-GO*: To prevent a possi-
ble inadvertent lockout, the trunk will open auto-
matically if a SmartKey with KEYLESS-GO is
recognized inside the vehicle or in the trunk.
The vehicle is only locked when the turn signals
flash three times. If you are carrying a second
SmartKey with KEYLESS-GO with you, you can
still lock the vehicle.
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. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
123 Controls in detail
Locking and unlocking
Closing trunk from the inside
automatically*
In vehicles with trunk opening/closing sys-
tem* you can close the trunk from the in-
side using the remote trunk opening/
closing* switch.
1Remote trunk opening/closing* switch
Press switch1 until the indicator
lamp on the switch goes out and the
trunk is closed.To interrupt the closing procedure:
Release switch1.
Closing the trunk from the outside au-
tomatically*
Warning!
G
Maintain sight of trunk area while operating
the door mounted switch. Monitor the clos-
ing procedure carefully to m a k e s u r e t h a t n o
one is in danger of being injured.
To interrupt the closing procedure, press or
pull the door mounted remote trunk open-
ing/closing* 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
opening/closing* switch can be operated.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. A child’s unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.
i
If the trunk lid comes into contact with an
object while closing (e.g. luggage that has been
piled too high) in the upper motion sequence, the
closing procedure is stopped and the trunk re-
opens slightly.
Warning!
G
Monitor the closing procedure carefully to
make sure 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,
do one of the following:
press button Š on the SmartKey or
SmartKey with KEYLESS-GO*
press or pull the remote trunk open-
ing/closing* switch (on the driver’s
door)
press the trunk closing switch
(page 124)
124 Controls in detailLocking and unlockingIn vehicles with trunk opening/closing sys-
tem* you can close the trunk separately
from the outside using the trunk closing
switch.
Vehicles without KEYLESS-GO*1Trunk closing switch
Vehicles with KEYLESS-GO*1Trunk closing switch
Press switch1 briefly.
The trunk closes.
press the KEYLESS-GO
locking/closing* switch (
page 125)
pull the trunk lid handle
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
opening/closing* switch can be operated.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. A child’s unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.
i
If the trunk lid comes into contact with an
object while closing (e.g. luggage that has been
piled too high) in the upper motion sequence, the
closing procedure is stopped and the trunk re-
opens slightly.