Page 109 of 491
108 Controls in detailLocking and unlocking
Important notes on using KEYLESS-GO
You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(page 102).
You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with the ‹button).
Always carry the SmartKey with
KEYLESS-GO with you.
iUSA 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
interference, and
(2) this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.
iCanada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject
to the following two conditions:
(1) This device may not cause interfer-
ence, and
(2) this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation of the device.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.
iYou can also open and close the power
windows and tilt/sliding sunroof* us-
ing the SmartKey (
page 223).
iWhen you unlock the vehicle, the SBC
brake system is activated (
page 92).
Page 110 of 491
109 Controls in detail
Locking and unlocking
Never store the SmartKey with
KEYLESS-GO together with:
Electronic items such as a cellular
phone or another SmartKey with
KEYLESS-GO
Metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.
To lock or unlock the vehicle, the
SmartKey with KEYLESS-GO must be
located outside the vehicle within ap-
proximately 3 ft (1 m) of a door or the
tailgate.
In order to start the engine with the
SmartKey with KEYLESS-GO:
The SmartKey with KEYLESS-GO
must be located in the vehicle.
All the doors must be closed.
The brake pedal must be firmly de-
pressed. Do not depress the accel-
erator.
If you have started the engine with the
KEYLESS-GO start / stop button
(page 36), you can only turn it off
again with this button, even if you have
put the SmartKey in the starter switch
in the meantime.
This does not apply if, after starting, the
selector lever is still in positionP and
then the SmartKey is inserted in the
starter switch. The SmartKey will then
have priority over the KEYLESS-GO
function and the vehicle’s electrical
system will operate according to the
position of the SmartKey in the starter
switch, even stopping the engine.
If the SmartKey with KEYLESS-GO is
positioned farther away from the vehi-
cle and can no longer be recognized by
the system, the vehicle cannot be
locked or the engine started via the
KEYLESS-GO system.
If the SmartKey with KEYLESS-GO is re-
moved from the vehicle while the igni-
tion is switched on (e.g. if passenger
exits the vehicle with the SmartKey),
the message
Key not recognized
will
appear in the multifunction display.
Find the SmartKey or change its
present location immediately (e.g.
place it on the front passenger seat or
insert it in shirt pocket).
Remember that the engine can be
started by anyone with a SmartKey
with KEYLESS-GO that is left inside the
vehicle. If you leave the SmartKey with
KEYLESS-GO behind when exiting and
locking the vehicle, the message
Key
still in vehicle
will appear in the
multifunction display.
Page 111 of 491
110 Controls in detailLocking and unlockingFactory settingGlobal unlocking
Pull the 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
within approximately 40 seconds if neither
door nor tailgate is opened.Global locking
Press lock button at outside door
handle (
page 60) or tailgate
(
page 113).
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.
iDepending on production date, your
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,
contact 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 112 of 491
111 Controls in detail
Locking and unlocking
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so when you pull 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
Pull the driver’s outside door handle.
All turn signal lamps flash once.
An acoustic signal sounds once (if
equipped and feature activated).
For more information, see “Factory
setting” (
page 110).
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 (if
equipped and feature activated).
The locking knobs in the doors
move up.
The anti-theft alarm system is dis-
armed.Global locking
Press lock button at outside door
handle (
page 60).
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.
Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
Page 113 of 491
112 Controls in detailLocking and unlocking
Checking the batteries
Press button‹ orŒ.
Battery check lamp5 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.Unlocking and opening the tailgate
A minimum height clearance of 6.76 ft
(2.06 m) is required to open the tailgate.
The handle is located in the rear license
plate recess.
You can unlock and open the tailgate sep-
arately.
Pull on the handle.
or
Press and hold buttonŠ until the
tailgate unlocks and opens.
!If you can no longer lock or unlock the
vehicle with the SmartKey with
KEYLESS-GO, then the batteries of the
SmartKey are discharged, or the
SmartKey is malfunctioning or the vehi-
cle battery is drained.
Check the batteries of the
SmartKey with KEYLESS-GO
(page 112) and replace them if
necessary (
page 408).
Use the mechanical key to unlock
the driver’s door (
page 404) as
required.
Have the vehicle batteries and their
connections checked.
Use the mechanical key to lock the
doors (
page 405).
If the SmartKey with KEYLESS-GO is
malfunctioning, contact an authorized
Mercedes-Benz Center.
!If battery check lamp5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 408).
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
button‹ orŒ will lock or unlock
the vehicle accordingly.
Page 114 of 491
113 Controls in detail
Locking and unlocking
Global locking using the lock button at
tailgate
1Lock button at tailgate
Press the lock button1.
All turn signal lamps flash three times.
An acoustic signal sounds once (if
equipped and feature activated).
For more information, see “Factory set-
ting” (
page 110).
The locking knobs in the doors move
down.
The anti-theft alarm system is armed.
!The tailgate swings open upwards auto-
matically. Always make sure there is
sufficient overhead clearance.
Vehicles with tailgate opening/closing
system*: to stop the opening proce-
dure, press buttonŠ on the
SmartKey. The tailgate stops moving.iIf the vehicle was previously centrally
locked, the tailgate will lock automati-
cally when closed (
page 117).
To confirm locking all turn signal lamps
flash three times.
iTo prevent a possible inadvertent lock-
out, the tailgate will open automatically
if a SmartKey with KEYLESS-GO is
recognized in the rear shelf or inside
the vehicle.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 at outside door handle
(page 60) or KEYLESS-GO locking/
closing switch (
page 121).
Page 115 of 491
114 Controls in detailLocking and unlockingLoss 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.
Opening the doors from the inside
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
1Locking knob
2Inside door handle
iIf the vehicle has previously been
locked from the outside using 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 fol-
lowing:
Press the Œ or ‹ button on
the SmartKey.
Insert the SmartKey in the starter
switch.
In vehicles with KEYLESS-GO*
Pull the outside door handle.
The SmartKey with KEYLESS-GO
must be within 3 ft (1 m) of the ve-
hicle.
Press the KEYLESS-GO* start/stop
button (
page 36).
The SmartKey with KEYLESS-GO
must be inside the vehicle.
Page 116 of 491
115 Controls in detail
Locking 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 respec-
tive rear door to unlock door.
Pull on door handle2 on the respec-
tive rear door to open door.
Opening the tailgate
Opening the tailgate from the outside
A minimum height clearance of 6.76 ft
(2.06 m) is required to open the tailgate.
The handle is located above the rear
license plate recess.
Pull on the handle.
The tailgate opens.
!The tailgate swings open upwards auto-
matically. Always make sure there is
sufficient overhead clearance.
Vehicles with tailgate opening/closing
system*: to stop the opening proce-
dure, press buttonŠ on the
SmartKey. The tailgate stops moving.iThe tailgate can also be opened using
the Š button on the SmartKey or
SmartKey with KEYLESS-GO.iIf the vehicle was previously centrally
locked, the tailgate will lock automati-
cally when closed (
page 117).
To confirm locking all turn signal lamps
flash three times.