104 Controls in detailLocking and unlockingGlobal locking
Press lock button on an outside door
handle (
page 62) or trunk
(
page 105).
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.
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so that grasping a door han-
dle 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 101) 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 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 101) flashes twice.
!If you can no longer lock or unlock the
vehicle with the SmartKey with
KEYLESS-GO, then the battery in the
SmartKey is discharged, the SmartKey
with KEYLESS-GO is malfunctioning or
the vehicle battery is drained.
Check the battery in the SmartKey
with KEYLESS-GO (
page 99) and
replace it if necessary
(
page 389).
106 Controls in detailLocking and unlockingChecking the battery
Press button ‹or Œ.
Battery check lamp5 (
page 101)
comes on briefly to indicate that the
SmartKey batteries are in order.Unlocking the trunk
You can unlock the trunk separately.
A minimum height clearance of
6.2 ft (1.88 m) is required to open the
trunk lid.
The handle is located above the rear li-
cense plate recess.
1Handle
Pull on handle 1.
The vehicle unlocks the trunk lid only.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.
!If battery check lamp5 (
page 101)
does not come on briefly during check,
then the SmartKey battery is dis-
charged.
Replace the battery (
page 389).
You can obtain the required battery at
any authorized Mercedes-Benz Center.
iIf the trunk does not unlock, it is still
locked separately (
page 110).
179 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.Activating
Switch on the ignition (
page 36).
Press button F on the automatic cli-
mate control panel (
page 181).
The indicator lamp on the button
comes on.
Deactivating
Press button F (
page 181) once
more.
The indicator lamp on the button goes
out.
iIf sunlight enters through a side win-
dow, close mirror cover 2 (if open),
and disengage sun visor from
mounting1 and pivot sun visor to the
side.
If the sun visor is disengaged from
mounting 1, mirror lamp3 will
switch off.
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 hard-
top 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 con-
sumers are operating simultaneously
and there is insufficient voltage in the
battery. The system responds automat-
ically by switching the rear window de-
froster off.
As soon as the battery has sufficient
voltage, the rear window defroster au-
tomatically switches back on automati-
cally.
191 Controls in detail
Automatic climate control
Deactivating
Press button T (
page 181).
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
when the coolant temperature is too
low
Ventilated storage compartments
The glove box and the armrest storage
compartment have their own air vents that
allow for cooling ventilation when the auto-
matic climate control system is activated.Glove box1Thumbwheel
2Air ventOpening the air vent
Turn thumbwheel1 upwards.
Closing the air vent
Turn thumbwheel1 downwards.
Storage compartment under the armrest1Thumbwheel
2Air vent
Opening the air vent
Turn thumbwheel1 to the right.
Closing the air vent
Turn thumbwheel1 to the left.
iYou should keep these air vents closed
when outside temperatures are low.
194 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 62) until the
windows 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
(Express-close)
Synchronizing the power windows
Switch on the ignition (
page 36).
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.
200 Controls in detailRetractable hardtopClosing the retractable hardtop with
the SmartKey (Convenience feature)
Aim the transmitter eye at the door
handle.
The SmartKey must be in close proxim-
ity to the outside door handle.
Press and hold button ‹ until the
retractable hardtop is completely
closed.
The retractable hardtop and the side
windows close. In the tachometer dis-
play you will see the message Retractable roof Closed
.Problems when operating the
retractable hardtop
Indicator lamp in the retractable hard-
top switch is flashing
Several conditions may cause the indicator
lamp in the hardtop switch to flash when
activated:
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 acti-
vating switch.
Warning!
G
If the retractable hardtop does not com-
pletely open or close, a warning sounds and
the retractable hardtop switch flashes. In
the speedometer display you will see K,
in the tachometer display you will see the
message
being lowered
. After about
15 seconds the roof hydraulics lose pres-
sure.
Properly lock the retractable hardtop
(
page 198) before continuing to drive.
238 Controls in detailUseful featuresYou can take and place telephone calls us-
ing the s and t buttons on the
steering wheel. To carry out other tele-
phone functions, use the control system
(page 159).
See separate instruction manual for in-
structions on how to operate the tele-
phone.
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
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.
Bear in mind that at a speed of just 30 mph
(approximately 50 km / h), your vehicle is
covering a distance of 44 feet
(approximately 14 m) every second.
!The initial activation of the Tele Aid
system may only be performed by
completing the subscriber agreement
and placing an acquaintance call using
the ¡ button. Failure to complete
either of these steps will result in a sys-
tem that is not activated.
If you have any questions regarding ac-
tivation, please call the Response
Center at 1-800-756-9018 (in the USA)
or 1-888-923-8367 (in Canada).
252 Controls in detailUseful featuresOperation of integrated remote control
Switch on the ignition (
page 36).
Select and press the appropriate inte-
grated signal transmitter button (2,
3 or4) to activate the remote con-
trolled device.
The integrated remote control trans-
mitter continues to send the signal as
long as the button is pressed – up to
20 seconds.Erasing the integrated remote control
memory
Switch on the ignition (
page 36).
Simultaneously press and hold down
the outer signal transmitter buttons2
and 4, for approximately 20 seconds,
until the indicator lamp1 flashes rap-
idly. Do not hold for longer than
30 seconds.
The codes of all three channels are
erased.Programming tips
If you are having difficulty programming
the integrated remote control, here are
some helpful tips:
Check the frequency of the hand-held
remote control5 (typically located on
the reverse side of the remote). The in-
tegrated remote control is compatible
with radio-frequency devices operating
between 288-399 MHz.
Put a new battery in the hand-held re-
mote control5. This will increase the
likelihood of the hand-held remote con-
trol sending a faster and more accurate
signal to the integrated remote control.
While performing step 3, hold the
hand-held remote control5 at differ-
ent lengths and angles from the signal
transmitter button (2, 3 or4) you
are programming. Attempt varying an-
gles at the distance of 2 to 5 inches
(5 to 12 cm) away or the same angle at
varying distances.
iIf you sell your vehicle, erase the codes
of all three channels.