109 Controls in detail
Locking and unlocking
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so that grasping an outside
door handle only unlocks the driver’s door,
interior lockable storage compartments
and the fuel filler flap.
Press and hold buttons Œ and ‹
simultaneously for about 6 seconds
until battery check lamp5
(page 106) flashes twice.
The SmartKey with KEYLESS-GO will
then function as follows:Unlocking the driver’s door and fuel fill-
er flap
Grasp the driver’s door handle.
All turn signals flash once. The locking
knob in the driver’s door moves up. The
anti-theft alarm system is disarmed.
Global unlocking
Grasp the door handle on the passen-
ger side.
All turn signals flash once. The locking
knobs in the doors move up. The
anti-theft alarm system is disarmed.
Global locking
Press lock button on an outside door
handle or the trunk lid.
With the trunk and all doors closed, all
turn signals flash three times. The lock-
ing knobs in the doors move down.
The anti-theft alarm system is armed.Restoring to factory setting
Press and hold buttons Œ and ‹
simultaneously for about 6 seconds
until battery check lamp5
(page 106) flashes twice.
!
If you can no longer lock or unlock the vehi-
cle with the SmartKey with KEYLESS-GO, then
the batteries in the SmartKey are discharged,
the SmartKey with KEYLESS-GO is malfunction-
ing or the vehicle battery is drained.
Check the batteries in the SmartKey with
KEYLESS-GO (
page 105) and replace
them if necessary (page 395).
Use the mechanical key to unlock the driv-
er’s door (
page 391) and the trunk
(
page 117).
Have the vehicle batteries and their connec-
tions checked (
page 414).
Use the mechanical key to lock or unlock the
doors (
page 393).
If the SmartKey with KEYLESS-GO is malfunc-
tioning, contact an authorized Mercedes-Benz
Center.
110 Controls in detailLocking and unlockingGlobal locking using the lock button on
the trunk lid
1Lock button
Press lock button 1 on the trunk lid.
With the trunk and all doors closed, all
turn signals flash three times. The lock-
ing knobs in the doors move down.
The anti-theft alarm system is armed.
Checking the batteries
Press button ‹or Œ.
Battery check lamp5 (
page 106)
comes on briefly to indicate that the
SmartKey batteries are in order.Loss of 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 of the SmartKey with
KEYLESS-GO or the mechanical key to
your car insurance company immedi-
ately.
Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
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Vehicles with KEYLESS-GO*: To prevent a
possible inadvertent lockout, the trunk lid will
open automatically if a SmartKey with
KEYLESS-GO is recognized inside the trunk.
When the hardtop is retracted, it must be com-
pletely lowered in the trunk before the trunk lid
can be closed (
page 242).
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You can also lock the vehicle using the lock
button on an outside door handle (
page 64).
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If battery check lamp5 (
page 106) does
not come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 395).
You can obtain the required batteries at any
authorized Mercedes-Benz Center.
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If the batteries are checked within signal
range of the vehicle, pressing the‹orŒ
button will lock or unlock the vehicle according-
ly.
118 Controls in detailLocking and unlockingIllumination of the emergency release but-
ton:
The button flashes for 30 minutes after
opening the trunk.
The button flashes for 60 minutes after
closing the trunk.
Power closing assist for trunk lid
It is not necessary to slam the trunk lid
closed. A electrical power-assisted mecha-
nism draws trunk lid closed quietly and au-
tomatically once trunk lid has been
latched. When the pneumatic power-as-
sisted mechanism has stopped, trunk can
be re-opened.Power closing assist for trunk lid
Press the trunk lid gently into its lock.
The trunk closes automatically.
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The emergency release button unlocks and
opens the trunk while the vehicle is standing still
or in motion.
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The emergency release button does not
open the trunk lid if the vehicle battery is dis-
charged or disconnected.
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.
In case of danger, pull the inside or outside
door handle, or press the trunk lid lock.
To prevent personal injury, never actuate
the closing assist mechanism by tampering
with the door or trunk lid latch.
Warning!
G
Only drive with the trunk closed as, among
other dangers such as blocked visibility, ex-
haust fumes may enter the vehicle interior.
183 Controls in detail
Good visibility
Rear window defroster
The rear window defroster uses a large
amount of power. To keep the battery
drain to a minimum, switch off the defrost-
er as soon as the rear window is clear. The
defroster is automatically deactivated af-
ter approximately 6 to 17 minutes of oper-
ation depending on the outside
temperature.
Switch on the ignition (
page 39).
Activating
Press button F on the automatic cli-
mate control panel (
page 185).
The indicator lamp on the button
comes on.Deactivating
Press button F (
page 185) once
more.
The indicator lamp on the button goes
out.
Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before driv-
ing. Visibility could otherwise be impaired,
endangering you and others.
!
The rear window defroster cannot be
switched on when the retractable hardtop is
open. The indicator lamp will start flashing if the
hardtop is open.
Close the retractable hardtop.
The rear window defroster can then be switched
on.
!
If the rear window defroster switches off too
soon and the indicator lamp starts flashing, too
many electrical consumers are operating simul-
taneously and there is insufficient voltage in the
battery. The system responds automatically by
switching the rear window defroster off.
As soon as the battery has sufficient voltage, the
rear window defroster automatically switches
back on automatically.
195 Controls in detail
Automatic climate control
Deactivating
Press button T (
page 185).
The indicator lamp on the button goes
out.
The residual heat is automatically turned
off:
when the ignition is switched on
after about 30 minutes
if the battery voltage drops
Ventilated glove box
The glove box has its own air vents that al-
low for cooling ventilation when the auto-
matic climate control system is activated.Glove box1Thumbwheel
2Air ventOpening the air vent
Make sure the air vent in the glove box
is unobstructed.
Turn thumbwheel1 upwards.
Closing the air vent
Turn thumbwheel1 downwards.
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You should keep air vent 2 closed when
outside temperatures are low.
198 Controls in detailPower windowsFully closing the door windows
(Express-close)
Pull switch1 or2 past the resis-
tance point and release.
The corresponding door window closes
completely.
If the upward movement of the door win-
dow is blocked during the closing proce-
dure, the door window will stop and open
slightly.
Stopping windows
Press or pull the respective switch
again.Closing the windows with
KEYLESS-GO*
Press and hold lock button on an out-
side door handle (
page 64) until the
windows are closed.
Synchronizing power windows
The power window must be synchronized
each time
after the battery has been disconnect-
ed
if the power windows cannot be fully
opened (Express-open) or closed
(Express-close)
Synchronizing the power windows
Switch on the ignition (
page 39).
Pull the power window switches until
the side windows are closed.
Hold the switches for approximately
1 second.
The power windows are synchronized.
Warning!
G
Driver’s door only:
If within 5 seconds the switch is again
pulled past the resistance point and re-
leased, the automatic reversal will not
operate.
Warning!
G
When closing the windows make sure that
there is no danger of anyone being harmed
by the closing procedure.
The windows will not automatically re-open
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 open for as long as
the door handle is held but the door not
opened.
203 Controls in detail
Retractable hardtop
Unlocked status noticed when stopped
Switch on the ignition (
page 39).
To lock the retractable hardtop in its
fully closed position, press retractable
hardtop switch forward (
page 200).
or:
To lock the retractable hardtop in its
fully opened position, pull up on the re-
tractable hardtop switch (
page 200).Unlocked status noticed while driving
Stop the vehicle in a safe location or as
soon as it is safe to do so.
Leave the ignition switched on.
To lock the retractable hardtop in its
fully closed position, press retractable
hardtop switch forward (
page 200).
or:
To lock the retractable hardtop in its
fully opened position, pull up on the re-
tractable hardtop switch (
page 200).Problems when operating the
retractable hardtop
Several conditions may cause the retract-
able hardtop to not open, close, or lock
properly:
The luggage cover in the trunk is not
closed.
Close the luggage cover in the
trunk.
The trunk lid is open.
Close the trunk lid.
The battery voltage is too low.
Start engine and let run while open-
ing/closing the retractable hard-
top.
Warning!
G
Stop the vehicle in a safe location or as soon
as it is safe to do so and lock the hardtop be-
fore continuing to drive. You could other-
wise endanger yourself and others.
244 Controls in detailUseful featuresTele 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
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 buttonçor use the volume knob
on your COMAND headunit.
To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.Shortly after the completion of your Tele
Aid acquaintance call, you will receive a
user ID and password. By visiting
www.mbusa.com and selecting “Tele Aid”
(USA only), you will have access to account
information, remote door unlock, and
more.
System self-check
Initially, after switching on the ignition,
malfunctions are detected and indicated
(the indicator lamps in the SOS button, the
Roadside Assistance button• and the
Information button¡ stay on longer
!
The initial activation of the Tele Aid system
may only be performed by completing the sub-
scriber agreement and placing an acquaintance
call using the ¡ button. Failure to complete
either of these steps will result in a system that
is not activated.
If you have any questions regarding activation,
please call the Response Center at
1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada).
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The SOS button is located above the interior
rear view mirror (
page 246).
The Roadside Assistance button• and the
Information button¡ are located below the
center armrest cover (page 234).
!
The Tele Aid system utilizes the cellular net-
work for communication and the GPS (Global Po-
sitioning System) satellites for vehicle location. If
either of these signals are unavailable, the Tele
Aid system may not function and if this occurs,
assistance must be summoned by other means.