94 Controls in detailLocking and unlockingLoss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key,
you should do the following:
Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.
Report the loss of the SmartKey or the
mechanical key immediately to your
car insurance company.
If necessary, have the mechanical lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO come
with two SmartKeys with KEYLESS-GO,
each with remote control and a removable
mechanical key.
The locking tabs for the mechanical key
portion of the two SmartKeys with
KEYLESS-GO are a different color to help
distinguish each SmartKey with
KEYLESS-GO unit.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked every time you grasp an outside
door handle.
If the SmartKey with KEYLESS-GO is valid,
your vehicle unlocks:
the doors
the trunk
the fuel filler flap
SmartKey with KEYLESS-GO1‹ Lock button
2Š Opening button for trunk
3Locking tab for mechanical key
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 79)
iWhen the passenger outside door han-
dle is grasped, the vehicle is centrally
unlocked.
98 Controls in detailLocking and unlockingSelective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so when you, grasp the driv-
er’s outside 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 driver’s door and fuel filler
flap
Grasp the driver’s outside door handle.
All turn signal lamps flash once. The
locking knob in the driver's door moves
up. The anti-theft alarm system is dis-
armed.Global unlocking
Grasp the outside door handle on the
passenger side.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system is dis-
armed.
Global locking
Press lock button at outside door han-
dle (
page 60).
All turn signal lamps flash three times.
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.
iYou can also lock the vehicle using the
lock button at trunk lid (
page 99) or,
vehicles with trunk lid opening/closing
system*, KEYLESS-GO locking/closing
switch (
page 107).
!If you cannot lock or unlock the vehicle
with the SmartKey with KEYLESS-GO,
then the battery of the SmartKey with
KEYLESS-GO is discharged, the
SmartKey with KEYLESS-GO is mal-
functioning or the vehicle battery is
drained.
Check the battery of the SmartKey
with KEYLESS-GO and replace them
if necessary (
page 371).
Use the mechanical key to unlock
the driver’s door (
page 367) and
the trunk (
page 368).
Use the mechanical key to lock the
driver’s door (
page 367).
99 Controls in detail
Locking and unlocking
Checking the battery
Press button‹ orŒ.
Battery check lamp5 comes on brief-
ly to indicate that the SmartKey with
KEYLESS-GO battery is in order.Global locking using the lock button at
trunk lid
1Vehicle lock button
Press vehicle lock button1.
All turn signal lamps flash three times.
The locking knobs in the doors move
down. The anti-theft alarm system is
armed.
Have the vehicle battery and the
battery connections checked
(page 386).
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 with KEYLESS-GO battery is
discharged.
Replace the battery (
page 371).
You can obtain the required battery at
any authorized Mercedes-Benz Center.
iIf the battery is checked within signal
range of the vehicle, pressing the
button‹ orŒ will lock or unlock
the vehicle accordingly.iTo prevent a possible inadvertent lock-
out, the trunk will open automatically if
a SmartKey with KEYLESS-GO is recog-
nized inside the vehicle or in the trunk.
iYou can also lock the vehicle using the
lock button at outside door handle
(page 60) or, vehicles with trunk lid
opening/closing system*,
KEYLESS-GO locking/closing switch
(page 107).
131 Controls in detail
Lighting
Interior lighting
The controls are located in the overhead
control panel.
1Left reading lamp on/off
2Rear interior lamps on/off
3Right reading lamp on/off
4Rocker switch for automatic
control on/offAutomatic control
Activating
Press rocker switch 4 to the center
position.
The interior lighting switches on in
darkness when you:
unlock the vehicle
remove the SmartKey from the
starter switch
open a door
open the trunk
The interior lighting switches off automati-
cally following an adjustable time delay.
For more information, see “Setting interior
lighting delayed shut-off” (
page 161).Deactivating
Press the ñ symbol on rocker
switch 4.
The interior lighting remains switched
off in darkness, even when you:
unlock the vehicle
remove the SmartKey from the
starter switch
open a door
open the trunk
iLeaving an interior light switch in the
ON position for extended periods of
time with the engine turned off could
result in a discharged battery.
iIf the door remains open, the interior
lighting switches off automatically after
approximately five minutes.
194 Controls in detailAutomatic climate controlThe system switches automatically to the
air recirculation mode if the carbon
monoxide (CO) or nitrogen oxide (NO
X)
concentration of the outside air increases
beyond a predetermined level, for example
in a tunnel.
The automatic air recirculation mode does
not function if ± mode is selected or if
the outside temperature has fallen below
41°F (5°C).
The activated charcoal filter should be
switched off when windows fog up on the
inside, or if the passenger compartment
needs to be quickly heated or cooled
down.
Rear window defroster
The rear window defroster uses a large
amount of power. To keep battery drain to
a minimum, switch off the defroster as
soon as the rear window is clear. The de-
froster is automatically deactivated after
approximately 6 to 17 minutes of opera-
tion depending on the outside tempera-
ture.
Activating
Press buttonF (
page 188).
The indicator lamp on the button
comes on.
Deactivating
Press buttonF (
page 188) again.
The indicator lamp on the button goes
out.
iIf you keep buttone pressed, the
side windows and the sliding / pop-up
roof will return to their previous posi-
tions.
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.!If the rear window defroster switches
off too soon and the indicator lamp
starts flashing, this means that too
many electrical consumers are operat-
ing simultaneously and there is insuffi-
cient voltage in the battery. The system
responds automatically by deactivating
the rear window defroster.
As soon as the battery has sufficient
voltage, the rear window defroster au-
tomatically turns itself back on.
196 Controls in detailAutomatic climate controlResidual heat and ventilation
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.
Activating
Turn the SmartKey in the starter switch
to position1 or0, or remove it from
the starter switch.
Press buttonT (
page 188).
The indicator lamp on buttonT
comes on.Deactivating
Press buttonT (
page 188).
The indicator lamp on buttonT
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 storage compartment
Depending on vehicle model and configu-
ration, your vehicle is equipped with a stor-
age compartment under the front armrest
(page 234) which can be ventilated
when the automatic air conditioning is
switched on. If so equipped, the switch is
located inside the storage compartment in
the front. The air temperature is about the
same as that of the center air vents.
The air volume is dependent on the setting
of:
Air distribution control
Air volume control
Air vents in the dashboard
The air temperature is about the same as
that of the dashboard air vents. It cannot
be regulated separately.
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting1 regardless of the air
distribution control setting.
200 Controls in detailPower windowsFully closing the windows
(Express-close)
Press switch1 to 4 at the
symbolj past the resistance point
and release.
The corresponding window closes com-
pletely.
Stopping windows during Express-op-
eration
Briefly press the respective power win-
dow switch again.
Synchronizing the power windows
after the battery has been disconnect-
ed
if the power windows cannot be fully
opened (Express-open) or closed
(Express-close)
Each power window must be synchronized.
Close all doors.
Switch on ignition (
page 34).
Press and hold switch1 to 4 at the
symbolj until the windows are
completely closed.
Hold on to switches1 to 4 for ap-
proximately one second.
The power windows are synchronized.
Warning!
G
Driver's door only:
If within five seconds you again press the
switch past the resistance point and re-
lease, the automatic reversal will not func-
tion.
!If the upward movement of the window
is blocked during the closing proce-
dure, the window will stop and open
slightly.Remove the obstruction, press
the respective power window switch at
the symbolj again past the resis-
tance point and release.If the window
still does not close when there is no ob-
struction, press and hold the respec-
tive power window switch at the
symbolj. The side window will
then close without the obstruction sen-
sor function.
205 Controls in detail
Power tilt/sliding sunroof
Stopping the power tilt/sliding sunroof
during Express-operation
Move the switch in any direction.
Synchronizing the power tilt/sliding
sunroof
The tilt/sliding sunroof must be synchro-
nized
after the battery has been
disconnected or discharged
after the tilt/sliding sunroof has been
closed manually (
page 370)
the tilt/sliding sunroof does not open
smoothly
after a malfunction
Switch on ignition (
page 34).
Press and hold the sunroof switch in di-
rection of arrow1 until the tilt/sliding
sunroof is fully raised at the rear.
Keep holding the sunroof switch in the
direction of arrow1 for approximately
one second.
Check the Express-open feature
(page 204).
If the tilt/sliding sunroof opens com-
pletely, the sunroof is synchronized.
Otherwise repeat the above steps.
iThe selecting a tilt/sliding sunroof
opening position feature is activated
for Canada vehicles, but deactivated
for U.S. vehicles at the factory. If you
wish to have it activated, contact an au-
thorized Mercedes-Benz Center.
To select a tilt/sliding sunroof opening
position, press the sunroof switch to
the resistance point and release it
when the tilt/sliding sunroof has
reached the desired position. The
tilt/sliding sunroof now opens to the
position set when the sunroof switch is
pressed past the resistance point in the
“open” direction.
iIf the movement of the tilt/sliding sun-
roof is blocked during the closing pro-
cedure, the sunroof will stop and
reopen slightly.