cooling MERCEDES-BENZ CL-Class 2008 C216 Comand Manual

Contents
Rear View Camera*...................... 477
Night View Assist* ....................... 481
Blind Spot Assist* ........................ 485
Air vents ............................................ 488
Opening and closing air vents ...... 490
Ventilated storage compartment . 490
Automatic climate control ................. 491
Deactivating climate
control system ............................. 493
Operating climate control system
in automatic mode ....................... 493
Setting temperature ..................... 494
Adjusting air volume .................... 494
Front defroster ............................. 494
Rear window defroster ................. 496
Maximum cooling MAXCOOL
(USA only) .................................... 496
Air recirculation mode.................. 496
Residual engine heat and
ventilation .................................... 498
Trunk ................................................. 500
Opening trunk .............................. 500
Closing trunk................................ 501
Trunk emergency release ............. 504
Valet locking ................................ 505Power tilt/sliding sunroof................... 506
Opening and closing power
tilt/sliding sunroof ........................ 506
Synchronizing ............................... 508
Loading and storing ............................ 509
Loading instructions ..................... 509
Storage compartments ................. 509
Cup holders .................................. 513
Trunk ............................................ 514
Useful features ................................... 516
Sun visors ..................................... 516
Ashtray ......................................... 516
Cigarette lighter ............................ 517
Floormats*.................................... 518
Telephone* ................................... 519
Tele Aid ......................................... 522
Garage door opener ...................... 530
Infrared reflecting windshield ....... 536
Operation.......................................... 537
The first 1000 miles (1500 km) .......... 538
Driving instructions ............................ 539
Drive sensibly – save fuel ............. 539
Drinking and driving...................... 539
Pedals ........................................... 539
Power assistance .......................... 539
Brakes .......................................... 540
Driving off ..................................... 542
Parking ......................................... 542
Tires.............................................. 543
Hydroplaning ................................ 543
Tire traction .................................. 544
Tire speed rating ........................... 544
Winter driving instructions ............ 545
Standing water ............................. 546
Passenger compartment............... 547
Driving abroad .............................. 547
Control and operation of
radio transmitters ......................... 547
Catalytic converter ....................... 548
Emission control ........................... 548
Coolant temperature .................... 549

269 Control systems
COMAND automatic climate control
COMAND automatic climate control
You can operate the automatic climate
control via COMAND or via the buttons on
the automatic climate control panel
(page 491).
Some of the special climate control func-
tions can only be set via COMAND.The following automatic climate control
functions can be operated via COMAND:
i
The components and operating principles of
COMAND can be found on (
page 83).
Warning!
G
When operating the automatic climate con-
trol, the air that enters the passenger com-
partment through the air vents can be very
hot or very cold (depending on the set tem-
perature). This may cause burns or frostbite
to unprotected skin in the immediate area of
the air vents.
Always keep sufficient distance between un-
protected parts of the body and the air
vents. If necessary, use the air distribution
adjustment (
page 271) to direct the air to
air vents in the vehicle interior that are not
in the immediate area of unprotected skin.
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pages
and pages in the “Controls in detail” part
(page 491) Otherwise the windows could
fog up, impairing visibility and endangering
you and others.
Function
Page
Temperature
270
Air distribution
271
Air volume
271
Switching off cooling (“AC
OFF”)
272
Central climate control (“Mono”)
273
Footwell temperature
274
Air flow from air vents
275

272 Control systemsCOMAND automatic climate control
Changing air volume: Slide qmr or
rotate ymz.
or

Switching back to automatic mode:
Rotateymz and select “AUTO”.

Exiting menu: Press n, back
buttonL in the center console
(page 84) or slideomp.
The setting is saved.Central climate control menu via
COMAND
The central climate control menu is in the
center of the climate control settings.
When the automatic climate control is
switched on, you will see “on” in the cen-
tral menu. The following functions can only
be operated in the central climate control
menu via COMAND:
Select climate control settings
Cen-
tral menu.Switching cooling on or off
The cooling function, only operational
when the engine is running, cools the vehi-
cle interior down to the selected tempera-
ture. The cooling function also
dehumidifies the air in the vehicle interior,
thus preventing the windows from fogging
up.
Function
Page
Switching off cooling (“AC
OFF”)
272
Central climate control (“Mono”)
273
Footwell temperature
274
Air flow from air vents
275


273 Control systems
COMAND automatic climate control
The “AC
OFF” function is used to permanent-
ly switch off the cooling function of the au-
tomatic climate control system.

Select climate control settings
Cen-
tral climate control menu.

Selecting “AC
OFF”: Slide qmr or
rotateymz.

Confirming selection: Press n.
A checkmark appears when the cooling
is switched off.
“AC
OFF” appears in the central menu of
the climate control settings.Selecting “Mono” mode
“Mono” is used to adjust the climate zones
for the entire vehicle at the same time.
When the “Mono” function is switched on
and you change the climate on the driver’s
side, these changes will be carried out in
the same manner for all climate zones.

Select climate control settings
Cen-
tral climate control menu.

Selecting “Mono”: Slide qmr or
rotateymz.

Confirming selection: Press n.
A checkmark appears when the func-
tion has been selected.

Exiting menu: Press back button L
in the center console (
page 84) or
slideomp.
i
Condensation may drip out from underneath
the vehicle. This is normal and not an indication
of a malfunction.Warning!
G
If you turn off the cooling function, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog
up more quickly. Window fogging may
impair visibility and endanger you and
others.
!
If the air conditioning cannot be turned on
again, this indicates that the air conditioning is
losing refrigerant. The compressor has turned it-
self off.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Center.

275 Control systems
COMAND automatic climate control
Adjusting air flow from air vents
The “Airflow” setting defines air distribu-
tion and air volume in automatic mode:

“Focused” (default setting, increased
air flow)


“Medium” (reduced air flow)


“Diffuse” (minimal air flow)

Select climate control settings
Cen-
tral climate control menu
“Airflow”.
A selection list appears.
The current setting is indicated by a
dotR.

Changing air flow: Slide qmr or
rotateymz.

Confirming selection: Press n.
i
In automatic mode, this setting optimizes
the air flow when outside temperatures are high.
i
When the interior ambient temperature of
the vehicle is very hot and the automatic climate
control is cooling the interior, the setting for air
flow is temporarily overridden.

411 Controls in detail
Driving and parking
Problems while driving
The engine runs erratically and misfires

An ignition cable may be damaged.


The engine electronics may not be op-
erating properly.


Unburned gasoline may have entered
the catalytic converter and damaged it.

Give very little gas.

Have the problem repaired by an au-
thorized Mercedes-Benz Center as
soon as possible.The coolant temperature is above
248°F (120°C)
The coolant is too hot and is no longer
cooling the engine.

Stop the vehicle in a safe location as
soon as possible and turn off the en-
gine. Allow engine and coolant to cool
off.

Check the coolant level and add cool-
ant if necessary (
page 559).In case of accident
If the vehicle is leaking gasoline:

Do not start the engine under any cir-
cumstances.

Move away from vehicle.

Notify local fire and/or police authori-
ties.
If the extent of the damage cannot be de-
termined:

Contact an authorized Mercedes-Benz
Center or call Roadside Assistance.
If no damage can be determined on the


major assemblies


fuel system


engine mount:

Start the engine in the usual manner.
i
To signal minor directional changes such as
changing lanes, press combination switch only
to point of resistance and release. The corre-
sponding turn signals will flash three times.
i
Excessive coolant temperatures trigger a
warning message in the multifunction display
(
page 622).

492 Controls in detailAutomatic climate controlThe automatic climate control is operation-
al whenever the engine is running. You can
operate the climate control system in ei-
ther the automatic or manual mode. The
system cools or heats the interior depend-
ing 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 closed.
It is possible to completely deactivate the
climate control system (
page 493). Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
i
If you have the air distribution and air vol-
ume automatically controlled, you can adjust the
temperature, footwell temperature and air flow.
The following basic settings are recommended:


Automatic air distribution control
(page 491)


Temperature: 72°F (22°C) (
page 494)


Footwell temperature: 0 (
page 274)


Air flow: focused (
page 275)
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pages
and in the “COMAND automatic climate
control” section (
page 269). Otherwise
the windows could fog up, impairing visibili-
ty and endangering you and others.
Warning!
G
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement 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.i
If the vehicle interior is hot, ventilate the in-
terior before driving off, see “Summer opening
feature” (
page 404). The automatic climate
control will then adjust the interior temperature
to the set value much faster.
Keep the air intake grille in front of the wind-
shield free of snow, leaves, sticks, and any other
debris.

493 Controls in detail
Automatic climate control
The following automatic climate control
functions can be operated via COMAND:
Deactivating climate control system
Deactivating: Press button´
(page 491) up or down.
The indicator lamp on the button
comes on. You will see “Climate Con-
trol OFF” in the COMAND display.

Reactivating: Press button´
(page 491) up or down.
The indicator lamp on the button goes
out. You will see the previous settings
in the COMAND display.Operating climate control system in
automatic mode
Air distribution and air volume is adjusted
automatically by the automatic climate
control system. You can also adjust the
settings for air distribution and air volume
manually.
Activating
Press buttonU (
page 491) up or
down.
The indicator lamp on the button
comes on.
Function
Page
Temperature
270
Air distribution
271
Air volume
271
Switching off cooling (“AC
OFF”)
272
Central climate control (“Mono”)
273
Footwell temperature
274
Air flow from air vents
275
Warning!
G
When the automatic climate control is
switched off, the outside air supply and cir-
culation are also switched off. Only choose
this setting for a short time. Otherwise the
windows could fog up, impairing visibility
and endangering you and others.
i
In automatic mode, cooling with dehumidify
is switched on. This function can be switched off
if necessary (
page 272).

496 Controls in detailAutomatic climate controlRear window defroster
Activating
Switch on the ignition (
page 365).

Press button< (
page 491) up or
down.
The indicator lamp on the button
comes on.
Deactivating

Press button< (
page 491) up or
down.
The indicator lamp on the button goes
out.
Maximum cooling MAXCOOL (USA only)
If U is selected on both the left and
right side and there is a high demand for
cooling, the display “MAXCOOL” appears
in the COMAND display.
This provides the fastest possible cooling
of the vehicle interior (when windows and
tilt/sliding sunroof are closed).
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e.g. before driving in a
tunnel). This setting cuts off the intake of
outside air and recirculates the air in the
passenger compartment.
!
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.
i
The defroster is automatically deactivated
after some time of operation depending on the
outside temperature.
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.i
If the rear window defroster switches off too
soon and the indicator lamp goes out, this indi-
cates that too many electrical consumers are op-
erating simultaneously and the load on the
battery is reducing available voltage. The system
responds automatically by deactivating the rear
window defroster.
i
Maximum cooling MAXCOOL is only avail-
able when the engine is running.Warning!
G
Fogged windows impair visibility, endanger-
ing you and others. If the windows begin to
fog on the inside, switching off the air
recirculation mode immediately should clear
interior window fogging. If interior window
fogging persists, make sure the air
conditioning (
page 272) is activated, or
press button;.

559 Operation
Engine compartment
Coolant level
The engine coolant is a mixture of water
and anticorrosion/antifreeze.
When checking the coolant level,

the vehicle must be parked on level
ground


the coolant temperature must be
below 158°F (70°C)
The coolant expansion tank is located on
the passenger side of the engine compart-
ment.
Example illustration from CL 5501Cap
2Coolant expansion tank

Using a rag, turn cap1 slowly approx-
imately one half turn counterclockwise
to release any excess pressure.

Continue turning the cap counterclock-
wise and remove it.
The coolant level is correct if the level


for cold coolant: reaches the white
marking (plastic bridge) inside the cool-
ant expansion tank


for warm coolant: is approximately
0.6 in (1.5 cm) higher

Add coolant as required.

Replace and tighten cap1.
For more information on coolant, see the
“Technical data” section (
page 738).
Warning!
G
In order to avoid potentially serious burns:

Use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system,
or if the coolant temperature gauge indi-
cates that the coolant is overheated.


Do not remove pressure cap on coolant
reservoir if coolant temperature is
above 158°F (70°C). Allow engine to
cool down before removing cap. The
coolant reservoir contains hot fluid and
is under pressure.


Using a rag, slowly open the cap approx-
imately
1/2 turn to relieve excess pres-
sure. If opened immediately, scalding
hot fluid and steam will be blown out un-
der pressure.


Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene gly-
col which may burn if it comes into con-
tact with hot engine parts.