92 Controls in detailLocking and unlockingSmartKey with KEYLESS-GO1‹ Lock button
2Š Unlock button for trunk lid
3Locking tab for mechanical key
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 76)
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
Warning!
G
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.!To prevent possible malfunction, avoid
exposing the SmartKey with
KEYLESS-GO to high levels of electro-
magnetic radiation. iIf the vehicle has been parked for a
longer period of time, you must pull the
door handle in order to activate the
KEYLESS-GO function.
You can also close the power windows
(page 188) and sliding/pop up roof
(page 193) using the SmartKey with
KEYLESS-GO.
94 Controls in detailLocking and unlockingFactory setting
Global unlocking
Grasp the door handle.
The vehicle will lock again automatically
within approximately 40 seconds of un-
locking if neither door nor trunk is opened.
Global locking
Press lock button at door handle
(page 57) or trunk (
page 95).Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so when you, grasp the driv-
er’s door handle only the driver’s door and
the fuel filler flap unlocks.
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
The SmartKey with KEYLESS-GO will
then function as follows:
Unlocking the driver’s door
Grasp the driver’s door handle.
Global unlocking
Grasp the door handle on the pas-
senger side.
Global locking
Press lock button at door handle or
trunk.Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
iThe vehicle could be inadvertently be
unlock if the SmartKey with
KEYLESS-GO is within 3 ft. (1 m) of the
vehicle and
the door handle is splashed with
water, or
you attempt to clean the door
handle.
!If you cannot lock or unlock the vehicle
with the SmartKey with KEYLESS-GO,
then the battery of the SmartKey is dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.
Check the battery of the SmartKey
with KEYLESS-GO and replace them
if necessary (
page 332).
Use the mechanical key to unlock
the doors (
page 331) and the
trunk lid (
page 332) as required.
Have the vehicle battery and the
battery connections checked.
Use the mechanical key to lock the
doors (
page 331) and the trunk
lid (if applicable) (
page 332) as
required.
95 Controls in detail
Locking and unlocking
Locking the vehicle
1Vehicle lock button
Press vehicle lock button1.
or
Press the lock button at the outside
door handle (
page 57).
or
Vehicles with trunk lid opening/closing
system*, press the KEYLESS-GO lock-
ing/closing switch at the trunk
(page 102).
The vehicle locks. The turn signals
flashes three times to confirm locking.
Checking the battery
Press button‹ orŒ.
Battery check lamp5 comes on brief-
ly to indicate that the SmartKey battery
is in order.Loss of the SmartKey with KEYLESS-GO
If you lose your SmartKey with
KEYLESS-GO or mechanical key you
should do the following:
Have the SmartKey with KEYLESS-GO
deactivated by an authorized
Mercedes-Benz Center.
Report the loss of the SmartKey with
KEYLESS-GO or the mechanical key im-
mediately to your car insurance com-
pany.
Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment. 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, the
SmartKey battery is discharged.
Peplace the battery (
page 332).
You can obtain the required battery at
any authorized Mercedes-Benz Center.
iIf the battery is ckecked within signal
range of the vehicle, pressing the
button‹ orŒ will lock or unlock
the vehicle accordingly.
194 Controls in detailSliding / pop-up roofClosing the sliding/pop-up roof with
KEYLESS-GO* (Convenience feature)
The power window (
page 186) will also
be closed when the sliding/pop-up roof is
operated with KEYLESS-GO.
Press and hold lock button at door
(page 57) until the sliding / pop-up
roof and the side windows are closed.
Synchronizing the sliding / pop-up roof
The power sliding / pop-up roof must be re-
synchronized each time after:
the battery has been disconnected
the sliding / pop-up roof has been
closed manually
the sliding / pop-up roof does not open
smoothly
a malfunction
Synchronizing
Switch on ignition.
Press and hold the switch in
direction1 until the sliding/pop-up
roof is fully raised at the rear.
Hold the switch for approximately one
second.
The sliding/pop-up roof is synchro-
nized.
Warning!
G
When closing the windows and the
sliding /pop-up roof, make sure that there is
no danger of anyone being harmed by the
closing procedure.
The sliding/pop-up roof will not automati-
cally reopen if blocked during convenience
closing.
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.
230 Controls in detailUseful featuresYou can take and make 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
(T
elematic 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 44 feet (approximate-
ly 14 m) every second.
!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
ten 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).
313 Practical hints
What to do if …?
Display symbol
Display messages
Possible cause
Possible solution
F
KEY
CHECK BATTERY
The battery in the KEYLESS-GO* key is
discharged.
Change the battery (
page 332).
KEY
NOT RECOGNIZED!
SmartKey with KEYLESS-GO* is not rec-
ognized while the engine is running be-
cause
the SmartKey with KEYLESS-GO* is
not in the vehicle
there is strong radio-frequency inter-
ference
Stop the vehicle as soon as it is safe to do
so.
Search for the SmartKey with
KEYLESS-GO*.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started again
after it has been stopped.
SmartKey with KEYLESS-GO* is momen-
tarily not recognized.
Change the position of the SmartKey with
KEYLESS-GO* in the vehicle.
Operate the vehicle with the SmartKey in
the starter switch if necessary.
KEY
DETECTED IN VEHICLE
SmartKey with KEYLESS-GO*left in the
vehicle was recognized while locking the
vehicle from the outside.
Take the SmartKey with KEYLESS-GO*
out of the vehicle.
KEY
DRIVE TO WORKSHOP!
The KEYLESS-GO* system is malfunction-
ing.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
318 Practical hintsWhat to do if …?Display symbol
Display messages
Possible cause
Possible solution
.
TURN SIG. MIRROR, R
CHECK LAMP!
The right turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
<
SEAT BELT SYSTEM
VISIT WORKSHOP!
The seat belt system is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
J
CLOSE
SUNROOF!
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding/pop up roof open.
Close the sliding/pop-up roof
(page 191).
K
CLOSE
SUNROOF!
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding/pop up roof open.
Close the sliding/pop-up roof
(page 191).
L
TELE AID MALFUNCTION
DRIVE TO WORKSHOP!
One or more main functions of the Tele
Aid system are malfunctioning.
Have the Tele Aid system checked by an
authorized Mercedes-Benz Center.
TELE AID BATTERY
DRIVE TO WORKSHOP!
The emergency power battery for the Tele
Aid system is malfunctioning. If the vehi-
cle battery is also discharged, Tele Aid
will not be operational.
Have the Tele Aid system checked by an
authorized Mercedes-Benz Center.
332 Practical hintsUnlocking/locking in an emergencyUnlocking the trunk
A minimum height clearance of 6.3 ft
(1.90 m) is required to open the trunk lid.
If you are unable to unlock the trunk with
the SmartKey or KEYLESS-GO*, open the
trunk with the mechanical key.
The trunk lid lock is located above the rear
license plate recess.
1Unlocking and opening
2Trunk lid lock
Insert the mechanical key into the
trunk lid lock2.
Turn the mechanical key counterclock-
wise to position1 and press trunk lid
lock2 in direction of arrow.
The trunk unlocks and opens.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey or the SmartKey with
KEYLESS-GO*, lock it with the mechanical
key as follows:
Close the passenger door and the trunk
lid.
Press the central locking switch in the
center console (
page 106).
Check to see whether the locking knob
on the passenger door is still visible. If
necessary push it down manually.
Slide mechanical key2 out of the
SmartKey (
page 331).
Lock the driver’s door with the me-
chanical key (
page 331).
Lock the trunk lid necessary with the
mechanical key (if applicable)
(page 104).
Replacing batteries in the SmartKey/
SmartKey with KEYLESS-GO*
If the batteries in the SmartKey or the
SmartKey with KEYLESS-GO* are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Center.
!The trunk lid swings open upwards au-
tomatically. Always make sure that
there is sufficient overhead clearance.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.