2008 MERCEDES-BENZ C300 4MATIC sunroof

125 Controls in detail
Power windows
Vehicles with panorama roof*
Press and hold button ‹ until the
side windows and the tilt/sliding panel
are completely closed.
Press and hold button ‹ again.
The roller sunblinds close.
Release button ‹ to interrupt pro-
cedure.
Vehicles with KEYLESS-GO*
(Canada only)
1Sensor surface on door handleThe SmartKey with KEYLESS-GO must be
located outside the vehicle within approxi-
mately 3 ft (1 m) of a door.
Close all doors.
Vehicles with tilt/sliding sunroof
Touch and hold sensor surface1 until
the windows and the tilt/sliding sun-
roof are completely closed.
Release sensor surface1 to interrupt
procedure.Vehicles with panorama roof*
Touch and hold sensor surface1 until
the side windows and the tilt/sliding
panel are completely closed.
Touch and hold sensor surface1
again.
The roller sunblinds close.
Release sensor surface1 to interrupt
procedure.iMake sure you are only touching the sensor
surface.
iMake sure you are only touching the sensor
surface.

251 Controls in detail
Dual-zone automatic climate control
The dual-zone automatic climate control is
operational whenever the engine is run-
ning. You can operate the dual-zone auto-
matic climate control system in either the
automatic or manual mode. The system
cools or heats the interior depending on
the selected interior temperature and the
current outside temperature.
It can only function optimally when you are
driving with the windows and the tilt/slid-
ing sunroof/panorama sunroof* closed.
Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.The air conditioning will not engage (no
cooling) if the A/C mode is deactivated
(
page 258).
Warning!G
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature).
This may cause burns or frostbite on unpro-
tected skin in the immediate area of the air
vents. Always keep sufficient distance be-
tween unprotected parts of the body and the
air vents. If necessary, use the air distribu-
tion control (
page 248) to direct the air to
air vents in the vehicle interior that are not
in the immediate area of unprotected skin.
Warning!G
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled interval. A clogged filter will
reduce the air volume to the interior and the
windows could fog up, impairing visibility
and endangering you and others. Have a
clogged filter replaced as soon as possible
at an authorized Mercedes-Benz Center.
Warning!G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.

256 Controls in detail
Dual-zone automatic climate control
Maximum cooling MAX COOL
(USA only)
You can use this setting to provide the fast-
est possible cooling of the vehicle interior
(when windows and tilt/sliding sunroof or
tilt/sliding panel* are closed).
Activating: Press button3
(
page 250).
The indicator lamp in the button comes
on.
The air conditioning switches
automatically to the following functions:

maximum cooling

maximum blowing power

the air recirculation mode is switched
on
Deactivating: Press button3
(
page 250) again.
The indicator lamp in the button goes
out. The previous settings are once
again in effect.
Rear window defroster
Activating: Switch on the ignition.
Press button¯ (page 250).
The indicator lamp in the button comes
on.
iTo switch the maximum cooling function off,
you can also press button ´, U ory
(
page 250).
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 uses a large
amount of power. To keep battery drain to a min-
imum, switch off the defroster as soon as the
rear window is clear.

260 Controls in detail
3-zone automatic climate control* (Canada only)
The 3-zone automatic climate control is
operational whenever the engine is run-
ning. You can operate the 3-zone automat-
ic climate control system in either the
automatic or manual mode. The system
cools or heats the interior depending on
the selected interior temperature and the
current outside temperature.
It can only function optimally when you are
driving with the windows and the tilt/slid-
ing sunroof/panorama sunroof* closed.It is possible to completely deactivate the
3-zone automatic climate control system
(
page 261).
Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.The air conditioning will not engage (no
cooling) if the A/C mode is deactivated
(
page 267).
Warning!G
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature).
This may cause burns or frostbite on unpro-
tected skin in the immediate area of the air
vents. Always keep sufficient distance be-
tween unprotected parts of the body and the
air vents. If necessary, use the air
distribution control (page 248) to direct
the air to air vents in the vehicle interior that
are not in the immediate area of unprotect-
ed skin.
Warning!G
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled interval. A clogged filter will
reduce the air volume to the interior and the
windows could fog up, impairing visibility
and endangering you and others. Have a
clogged filter replaced as soon as possible
at an authorized Mercedes-Benz Center.
Warning!G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iKeep the air intake grille in front of the wind-
shield free of snow and debris.
Do not obstruct air flow by placing objects on the
air flow-through exhaust slots below the rear
window.
iIf the vehicle interior is hot, ventilate the in-
terior before driving off, see “Summer opening
feature” (
page 123). The climate control will
then adjust the interior temperature to the set
value much faster.

273 Controls in detail
Power tilt/sliding sunroof
Power tilt/sliding sunroof
Opening and closing power tilt/sliding
sunroof
Warning!G
When closing the tilt/sliding sunroof, make
sure there is no danger of anyone being
harmed by the closing procedure.
If the tilt/sliding sunroof is blocked while
closing and reopens, it can be closed with
greater force if you pull the switch to the re-
sistance point in the direction indicated by
arrow
3 within 2 seconds.
If the tilt/sliding sunroof is blocked again
and reopens, you can close it with deactivat-
ed obstruction sensor function by pulling
the switch again to the resistance point in
the direction indicated by arrow
3 within 2
seconds.
When closing the tilt/sliding sunroof with
the obstruction sensor function deactivated,
make sure no one can become trapped, as
this could result in serious or fatal injuries.
The opening/closing procedure of the
tilt/sliding sunroof can be immediately halt-
ed by releasing the switch or, if the switch
was moved past the resistance point and re-
leased, by moving the switch in any direc-
tion.
The tilt/sliding sunroof is made out of glass.
In the event of an accident, the glass may
shatter. This may result in an opening in the
roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening also presents a potential for injury
for occupants wearing their seat belts
properly as entire body parts or portions of
them may protrude from the passenger
compartment.When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
!To avoid damaging the seals, do not trans-
port any objects with sharp edges which can
stick out of the tilt/sliding sunroof.
Do not open the tilt/sliding sunroof if there is
snow or ice on the roof, as this could result in
malfunctions.
!Please keep in mind that weather conditions
can sometimes change rapidly. Make sure to
close the tilt/sliding sunroof when leaving the
vehicle. If water enters the vehicle interior, vehi-
cle electronics could be damaged which is not
covered by the Mercedes-Benz Limited
Warranty.

274 Controls in detail
Power tilt/sliding sunroof
1Push up to raise sunroof at rear
2Push back to slide sunroof open
3Pull down to close the sunroof
With the sunroof closed or tilted open, a
screen can be slid into the roof opening to
help provide shade. When sliding the sun-
roof open, the screen will also retract.Screen
Switch on the ignition.
To open, close, raise or lower, move the
switch to resistance point in the re-
quired direction1to3 until the
tilt/sliding sunroof has reached the de-
sired position.
iWhen the tilt/sliding sunroof is open, reso-
nance noises may result in addition to the usual
wind noises. They are caused by minimal pres-
sure changes in the passenger compartment. To
reduce or eliminate these noises, change the po-
sition of the tilt/sliding sunroof or open a side
window slightly.
iYou can also open or close the tilt/sliding
sunroof using the SmartKey, see “Summer open-
ing feature” (
page 123) and “Convenience
closing feature” (
page 124).
iWith the SmartKey in starter switch
position0 or removed from the starter switch,
the tilt/sliding sunroof can be operated

until you open the driver’s or passenger door

for up to approximately 5 minutes

275 Controls in detail
Power tilt/sliding sunroof
Express-operation: To open, close,
raise or lower, move the switch past
the resistance point in the required
direction1to3 and release.
The tilt/sliding sunroof opens or closes
completely.
Stopping during Express-opening/
closing: Move the switch in any direc-
tion.
Synchronizing
The tilt/sliding sunroof must be synchro-
nized

after the tilt/sliding sunroof has been
closed manually

if the tilt/sliding sunroof can only be
opened with a jerking motion

after a malfunction
Switch on the ignition (page 82).
Press and hold the sunroof switch in
the direction 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
1 second.
Check the Express-operation feature
(
page 275).
If the tilt/sliding sunroof opens com-
pletely, the sunroof is synchronized.
Otherwise repeat the above steps.
iIf the movement of the tilt/sliding sunroof is
blocked during the closing procedure, the sun-
roof will stop and reopen slightly.
!Do not open the tilt/sliding sunroof com-
pletely if it is not aligned. Otherwise you could
damage the tilt/sliding sunroof.

280 Controls in detail
Loading and storing
Roof rack*
1CoversFlip the covers1 upward in direction
of arrow.
Vehicles with panorama roof with
tilt/sliding panel*: Open the cover 1
carefully in the opposite direction to
that indicated by the arrow.
Only attach the roof-rack system to the
anchorage points under the covers.
Observe manufacturer’s instructions
for installation.
Warning!G
Only use roof racks approved by
Mercedes-Benz for your vehicle model to
avoid damage to the vehicle.
Follow the manufacturer’s installation
instructions. Otherwise, an improperly
attached roof rack system or its load could
become detached from the vehicle.
Do not exceed the maximum roof load of
220 lb (100 kg).
Take into consideration that when the roof
rack is loaded, the handling characteristics
are different from those when operating the
vehicles without the roof rack loaded.
!Load the roof rack in such a way that the ve-
hicle cannot be damaged while driving.
Make sure

you can fully raise tilt/sliding sunroof or the
panorama roof with tilt/sliding panel*

you can fully open the trunk