92 Controls in detailLocking and unlockingSmartKey 1‹ Lock button
2Š Unlock button for the trunk lid
3Mechanical key locking tab
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 73)
For more information on using the
SmartKey buttons, see “SmartKey”
(
page 88).Important notes on using KEYLESS-GO
You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(page 88).
You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with the remote control).
Always carry the SmartKey with
KEYLESS-GO with you.
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.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, 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. Unsupervised use of vehi-
cle equipment may cause serious personal
injury.!To prevent possible malfunction, avoid
exposing the SmartKey with
KEYLESS-GO to high levels of electro-
magnetic radiation.iYou can also open and close the power
windows (
page 197) and
sliding / pop-up roof* (
page 201) or
panorama sliding / pop-up roof*
(
page 208) using the SmartKey.
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.
96 Controls in detailLocking and unlockingLocking the vehicle
1Lock button at trunk
Press the lock button1.
or
Press the lock button at the outside
door handle (
page 54).
or
Vehicles with trunk lid opening/closing
system*, press the KEYLESS-GO
locking/closing switch in the trunk
(page 103).
The vehicle locks. The turn signals
flashes three times to confirm locking.Checking the batteries
Press button‹ orŒ.
Battery check lamp5 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.Loss of the SmartKey with KEYLESS-GO
If you lose your SmartKey with KEY-
LESS-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.
!If battery check lamp5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 355).
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.
104 Controls in detailLocking and unlockingTrunk 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 unlocks and the trunk lid
opens.
Illumination of the emergency release but-
ton:
The button will flash for 30 minutes af-
ter opening the trunk.
The button will flash for 60 minutes af-
ter closing 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.
iThe emergency release button unlocks
and opens the trunk while the vehicle is
standing or driving.
The emergency release button does
not open the trunk lid, if the vehicle
battery is discharged or disconnected.
iIf the emergency release button is
pressend and the vehicle was centrally
locked from the outside using the
SmartKey, the exterior lamps will flash
and the alarm will sound as the trunk
lid opens.
To cancel the alarm, do one of the fol-
lowing:
With the SmartKey
Insert the SmartKey in the starter
switch.
Press the Œ or ‹ button on
the SmartKey.
With KEYLESS-GO*
Grasp the outside door handle.
Press the KEYLESS-GO* start/stop
button.
200 Controls in detailPower windowsClosing the side windows with KEY-
LESS-GO*
Press and hold lock button at door
(page 54) until the side windows and
the sliding / pop-up roof or panorama
sliding/pop-up roof* are closed.
Synchronizing power windows
The power window must be resynchro-
nized each time
after the battery has been disconnect-
ed.
if the power windows cannot be fully
opened (Express-open) or closed (Ex-
press-close).
Synchronizing the power windows
Switch on ignition.
Pull the power window switches until
the side windows are closed.
Hold the switches for approximately
one second.
The power windows are synchronized.
Warning!
G
When closing the windows and the
sliding / pop-up roof*, be sure that there is
no danger of anyone being harmed by the
closing procedure.
If potential danger exists, proceed as fol-
lows:
Release the lock button.
Pull on the door handle and hold firmly.
The side windows and the
sliding / pop-up roof* will open for as
long as the door handle is held but the
door not opened.
209 Controls in detail
Panorama sliding / pop-up roof*
Closing the panorama sliding / pop-up
roof with KEYLESS-GO*
The power windows (
page 197) will also
be closed when the panorama
sliding / pop-up roof is operated with
KEYLESS-GO.
Press and hold lock button at driver’s
door (
page 54) until the side win-
dows and the panorama
sliding / pop-up roof are closed.Synchronizing the panorama
sliding / pop-up roof
It is necessary to resynchronize the pan-
orama sliding / pop-up roof after
voltage supply interruption due to a
disconnected or discharged battery
the roof has been closed manually
the roof has been opened with an
abrupt movement
a malfunction.
Remove the fuse from the main fuse
box (
page 385).
Replace the fuse in the main fuse box.
Switch on ignition.
Press the switch in direction2
(page 206).
Warning!
G
When closing the windows and the panora-
ma sliding /pop-up roof, be sure that there is
no danger of anyone being harmed by the
closing procedure.
If potential danger exists, proceed as fol-
lows:
Release the lock button.
Pull on the door handle and hold firmly.
The side windows and the panorama
sliding/pop-up roof will open for as long
as the door handle is held but the door
is not opened.
250 Controls in detailUseful featuresYou can take and place telephone calls us-
ing thes andt buttons on the
steering wheel. To carry out other tele-
phone functions, use the control system
(page 129).
See separate operating manual for instruc-
tions on how to use the telephone.
Tele Aid* The Tele Aid system
(Tele
matic A
larm I
dentification on D
e-
mand)
The Tele Aid system consists of three
types of response:
automatic and manual emergency
roadside Assistance and
information
The Tele Aid system is operational provid-
ing that the vehicle’s battery is charged,
properly connected, not damaged and cel-
lular and GPS coverage is available.
The speaker volume of a Tele Aid call can
be adjusted when using the volume control
on the multifunction steering wheel. To
raise, press buttonæ and to lower,
press buttonç.
To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.
Bear in mind that at a speed of just 30 mph
(approximately 50 km / h), your vehicle is
covering a distance of approximately
44 feet (approximately 13.5 m) every sec-
ond.Warning!
G
Some jurisdictions prohibit the driver from
using a cellular telephone while driving a ve-
hicle. Whether or not prohibited by law, for
safety reasons, the driver should not use the
cellular telephone while the vehicle is in mo-
tion.
Stop the vehicle in a safe location before an-
swering or placing a call.
!The initial activation of the Tele Aid sys-
tem may only be performed by com-
pleting the subscriber agreement and
placing an acquaintance call using the
SOS button. Failure to complete either
of these steps will result in a system
that is not activated. If the system is
not activated, the indicator lamp in the
SOS button stays on after turning the
SmartKey in starter switch to
position2, or pressing the
KEYLESS-GO* start/stop button twice
to position2. The message
Tele Aid –
not activated
will be shown in the
multifunction display for approximately
10 seconds.
If you have any questions regarding ac-
tivation, please call the Response Cen-
ter at 1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada).