2011 MERCEDES-BENZ C-CLASS COUPE cooling

1, 2, 3 ...
12-button multifunction steering
wheel Operating the on-board computer .211
Overview .......................................... 39
12 Vsocket
see Sockets
4-button multifunction steering
wheel
Overview .......................................... 38
4-button multifunction steering
wheel
Operating the on-board computer .207 A
ABS (Anti-lock Braking System) Display message (12-button mul-
tifunctio nsteering wheel) ..............238
Display message (4-button multi-
function steering wheel) ................234
Function/notes ................................ 65
Important safety notes ....................65
Warning lamp ................................. 275
Activating/deactivating air-recir-
culation mode .................................... 127
Activating/deactivating cooling
with air dehumidification .................124
Active Blin dSpot Assist
Display message (12-button mul-
tifunction steering wheel) ..............259
Function/notes ............................. 194
Switching on/off (on-board com-
puter, 12-button multifunction
steering wheel) .............................. 222
Towing atrailer .............................. 197
Active Driving Assistance package .194
Active Lane Keeping Assist Display message (12-button mul-
tifunctio nsteering wheel) ..............258
Function/informatio n.................... 197
Switching on/off (on-board com-
puter, 12-button multifunction
steering wheel) .............................. 222
Towing atrailer .............................. 199
Active light function .........................111Active Service Syste
mPLUS
see ASSYS TPLUS service interval
display
ADAPTIVE BRAKE .................................71
Adaptive brake lamps .........................67
Adaptive Highbeam Assist Function/notes ............................. 112
Adaptive Main-beam Assist
Display message (12-button mul-
tifunctio nsteering wheel) ..............251
Adaptive Main-Beam Assist
Switching on/off (on-board com-
puter) ............................................. 225
Additional speedometer ...................223
Additives (engine oil) ........................356
Adjusting the headlamp range .........110
Airbags Activation ......................................... 45
Front airbag (driver, front
passenger )....................................... 48
Important safety guidelines .............46
Kneebag .......................................... .48
Pelvis airbag .................................... 49
Sidebag ............................................ 48
Windowba g...................................... 49
Air-conditioning system
see Climate control
Airf ilter
Display message (12-button mul-
tifunction steering wheel) ..............255
Display message (4-button multi-
function steering wheel) ................253
Air pressure
see Tyre pressure
Airv ents
Glove compartmen t....................... 133
Important safety notes ..................132
Rea r............................................... 133
Setting ........................................... 132
Setting the centre air vents ...........133
Setting the side air vents ...............133
Alarm system
see ATA (Anti-Theft Alarm system)
Alertness Assistant
see ATTENTION ASSIST
AMGMenu (on-board computer) ....... 229
Anti-glare film .................................... 2974
Index

Parking brake
................................ 159
Warning lamp ................................. 275
Breakdown
see Flat tyre
see Towing away/tow-starting
Bulbs
see Changing bulbs C
Calling up a fault see Display messages
Capacities
see Technical data
Car
see Vehicle
Care
Automatic car wash .......................306
Display ........................................... 310
Exterior lighting ............................. 309
High-pressure cleaner .................... 307
Matt paintwork .............................. 308
Notes ............................................. 306
Paint .............................................. 307
Plastic trim .................................... 310
Reversing camera ..........................309
Seat bel t........................................ 311
Seat cover ..................................... 311
Sensors ......................................... 309
Tai lpipes ....................................... 309
Trim pieces .................................... 311
Wheels ........................................... 307
Windows ........................................ 308
Wiper blades .................................. 308
Wooden trim .................................. 311
Car key
see Key
Car wash (care) ................................. 306
CD player/CD changer (12-button
multifunction steering wheel) .......... 218
Cell phone see Mobile phone
Central locking
Automatic locking (on-board com-
puter) ............................................. 226
Locking/unlocking (key ).................. 78
Centre console ..................................... 40 Changing bulbs
Brake lamps ................................... 118
Cornering light function .................117
Dipped-bea mheadlamps ............... 116
Important safety notes ..................114
Main-beam headlamps ................... 116
Overview of bul btypes .................. 115
Parking lamps (front) .....................117
Reversing lamps ............................ 118
Standing lamps .............................. 117
Child-proof locks
Child sea tlock ................................. 56
Children
In the vehicle ................................... 55
Restraint systems ............................ 55
Child seat
Automatic recognition .....................57
Child sea tlock ................................. 56
Display message (12-button mul-
tifunction steering wheel) ..............243
Display message (4-button multi-
function steering wheel) ................237
ISOFIX .............................................. 58
On the front-passenger sea t............ 57
Problem (malfunction) .....................61
Recommendations ...........................63
Suitable positions ............................ 61
Cigarette lighter ................................ 291
Cleaning Trailer tow hitch ............................. 309
Climate control
Activating/deactivating rear win-
dow heating ................................... 126
Auxiliary heating/ventilation .......... 128
Controlling automatically ...............124
Convenience opening/closing (air
recirculation) ................................. 127
Cooling with aird ehumidification..124
Demisting the windows .................. 126
Demisting the windscreen .............126
Important safety notes ..................122
Indicator lamp ................................ 124
Notes on using THERMATIC auto-
matic climate control .....................123
Overview of systems ......................122
Problems with cooling with air
dehumidification ............................ 124 Index
7

Problem with the rear window
heating
.......................................... 127
Setting the aird istribution.............125
Setting the airflow .........................125
Setting the airv ents...................... 132
Setting the temperature ................125
Switching air-recirculation mode
on/off ............................................ 127
Switching on/off ........................... 124
Switching the ZONE function on/
off .................................................. 125
THERMATIC automatic climate
control (2-zone) ............................. 123
Cockpit
Overview .......................................... 30
see Instrument cluster
COMAND Online
see separate operating instructions
Combination switch ..........................110
Constant headlamp mode see Daytime driving lamps
Consumption statistics
On-board computer (12-button
multifunctio nsteering wheel) ........215
On-board computer (4-button
multifunctio nsteering wheel) ........210
Convenience closing feature ..............89
Convenience opening/closing (air-
recirculation mode) ........................... 127
Convenience opening feature ............88
Coolan t(engine)
Checkin gthe level ......................... 303
Display message (12-button mul-
tifunctio nsteering wheel) ..............254
Display message (4-button multi-
function steering wheel) ................251
Notes ............................................. 356
Temperature display (12-button
multifunctio nsteering wheel;
AMG )............................................. 229
Temperature gauge (12-button
multifunctio nsteering wheel) ........210
Temperature gauge (4-button
multifunctio nsteering wheel) ........206
Warning lamp ................................. 280
Cooling
see Climate control Cornering lamps
Changing bulbs .............................. 117
Cornering light function
Display message (12-button mul-
tifunctio nsteering wheel) ..............248
Display message (4-button multi-
function steering wheel) ................244
Function/notes ............................. 111
Crash-responsive emergency light-
ing ....................................................... 114
Cruise control Cruise control leve r....................... 162
Deactivating ................................... 164
Display message (12-button mul-
tifunctio nsteering wheel) ..............261
Display message (4-button multi-
function steering wheel) ................256
Driving system ............................... 162
Important safety notes ..................162
LIM indicator lamp .........................162
Selecting ........................................ 163
Setting aspeed .............................. 164
Storing and maintaining current
speed ............................................ .163
Cup holder
Centre console .............................. 289
Important safety notes ..................289
Rea rcompartmen t......................... 290 D
Dashboard see Cockpit
Data
see Technical data
Daytime driving lamps
Switching on/off (on-board com-
puter, 12-button multifunction
steering wheel) .............................. 224
Daytime driving lights
Display message (12-button mul-
tifunctio nsteering wheel) ..............250
Display message (4-button multi-
function steering wheel) ................247
Switching on/off (on-board com-
puter, 4-button multifunction
steering wheel) .............................. 210
Switching on/off (switch) ..............109 8
Index

Useful information
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviations are possible. Please
note that your vehicle may not be equipped
with all features described. This also
applies to safety-relevan tsystems and
functions.
i Please read the information on qualified
specialist workshops (Y page 26).Overview of climate control systems
Important safety notes
G
WARNING
Observe the settings recommended on the
following pages. Otherwise, th ewindows
could mist up. This may obstruct your view of
the traffic situation and, as a result, you may
cause an accident.
THERMATIC automatic climate control con-
trols the temperature and the humidity in the
vehicle interior and filters undesirable sub-
stances from the air.
THERMATIC automatic climate control is only
operational when the engine is running. Opti-
mum operation is only achieved when you
drive with the side windows and panorama
sliding sunroof closed.
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 88). This
will speed up the cooling process and the
desired vehicle interior temperature will be
reached more quickly.
i The integrated filter can filter out most
particles of dust and completely filters out
pollen .Aclogged filter reduces the amount
of air supplied to the vehicle interior .For
this reason, you should always observe the
interval for replacing the filter, which is specified in the Service Booklet
.As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Service Booklet.
i It is possible that the residual heat func-
tion may be activated automatically an hour
after the key is removed. The vehicle is then
ventilated for 30 minutes to dry the air-
conditioning system. 122
Overview of climate control systemsClimate control

Operating the climate control system
Switching climate control on/off
Important information i
When climate control is switched off, the
air supply and air circulation are also
switched off. Only select this setting
briefly. Otherwise, the windows may mist
up.
i Switch on climate control primarily using
the à button (Y page 124).
Activating/deactivating X
Turn the key to position 2in the ignition
lock.
X To switch on: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press button ^.
The indicator lamp in the ^button goes
out. The previously selected settings come
into effect again.
X To switch off: press the^button.
The indicator lamp in the ^button lights
up. Activating/deactivating cooling with
air dehumidification
Important information The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and dehu-
midified according to the temperature selec-
ted.
G
WARNING
If the "cooling with air dehumidification" func-
tion is deactivated, the air inside the vehicle
will not be cooled (during warm weather) or
dehumidified. The windows could mist up more quickly. This may preven
tyou from
observing the traffic conditions, thereby caus-
ing an accident.
Condensation may drip from the underside of
the vehicle when THERMOTRONIC is in cool-
ing mode. This is normal and not a sign that
there is a malfunction.
i The cooling with air dehumidification
function uses refrigerant R134a. This cool-
ant does not contain chlorofluorocarbons,
and therefore does not damage the ozone
layer.
Activating/deactivating X
To activate: press the¿button.
The indicator lamp in the ¿button lights
up.
X To switch off: press the¿button.
The indicator lamp in the ¿button goes
out. The cooling with air dehumidification
function has a delayed switch-off feature.
Problems with the cooling with air
dehumidification function When you press the
¿button, the indica-
tor lamp in the button flashes three times or
remains off. You can no longer switch on the
cooling with air dehumidification function.
X Consult a qualified specialist workshop. Setting climate control to automatic
mode
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the tem-
perature of the dispensed air, the airflow and
the air distribution.
Automatic mode will achieve optimal opera-
tion if cooling with air dehumidification is also
activated. If desired, cooling with air dehu-
midification can be deactivated. 124
Operating the climate control systemClimate control

The temperature setting for the driver's
side is adopted for the front-passenger
side.
Demisting the windscreen
You can use this function to defrost the wind-
screen or to demist the inside of the wind-
screen and the side windows.
i You should only select the demisting
function until the windscreen is clear again.
X Turn the key to position 2in the ignition
lock.
X To activate: press the¬button.
The indicator lamp in the ¬button lights
up.
The climate control system switches to the
following functions:
R cooling with air dehumidification on
R high airflow 9
R high temperature 9
R air distribution to the windscreen and
fronts ide windows
R air-recirculation mode off
X To switch off: press the¬button.
The indicator lamp in the ¬button goes
out. The previously selected settings come
into effect again. The cooling with air dehu-
midification function remains on. Air-recir-
culation mode remains deactivated.
or
X Press the Ãbutton.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
or
X Turn temperature control :orB clock-
wise or anti-clockwise (Y page 123).
or
X Press the KorI button. Demisting the windows
Windows misted up on th einside X
Activate the ¿cooling with air dehu-
midification function.
X Activate automatic mode Ã.
X If the windows continue to mist up, activate
the demisting function (Y page 126).
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X
Activate the windscreen wipers.
X Press the _button repeatedly until the
O orP symbol appears in the dis-
play.
i You should only select this setting until
the windscreen is clear again. Rear window heating
Activating/deactivating G
WARNING
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others.
The rear window heating has ahigh current
draw. You should therefore switch it off as
soon as the window is clear .as it only
switches off automatically after several
minutes.
If the battery voltage is too low, the rear win-
dow heating may switch off.
X Turn the key to position 2in the ignition
lock.
X Press the ¤button.
The indicator lamp in the ¤button lights
up or goes out.
9 Depending on the outside temperature. 126
Operating the climate control systemClimate control

Setting the centre air vents
:
Centre air vent, left
; Centre air vent, right
= Centre vent thumbwheel, right
? Centre vent thumbwheel, left
X To open/close: turn thumbwheels =
and ?up or down. Setting the side air vents
X
To open/close: turn thumbwheel =to the
left or right.
i Side window demister vent :is never
completely shut, even if side air vent ;is
shut. Setting the glove compartment air
vent
When automatic climate control is activated,
the glove compartmen tcan be ventilated, for
instance to cool its contents .The level of air- flow depends on the airflow and air distribu-
tion settings.
!
Close the air vent when heating the vehi-
cle.
At high outside temperatures, open the air
vent and activate the "cooling with air dehu-
midification" function. Otherwise, temper-
ature-sensitive items stored in the glove
compartmentc ould be damaged. :
Air vent thumbwheel
; Air vent
X To open/close: turn thumbwheel :
clockwise or anti-clockwise. Setting the rear-compartment air
vents
Setting the centre vents in the rear com-
partment :
Rear-compartment air vent thumbwheel
; Rear-compartment air vent, right
= Rear-compartment air vent, left Adjusting the air vents
133Climate control Z

Problem Possible causes/consequences and
M Solutions
?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator
may be blocked or the electric engine radiator fan may be mal-
functioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X Observe the additional display messages in the multifunction
display.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Let the engine and coolant cool down.
X Check the coolant level and top up the coolant (Y page 303).
Observe the warning notes as you do so.
X If you have to top up the coolant frequently, have the engine
cooling system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
X If the coolant temperature is less than 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop-start traffic. ?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.
The coolant temperature has exceeded 120 †. The airflow to the
engine radiator may be blocked or the coolant level may be too
low.
The engine is not being cooled sufficiently and may be damaged.
X
Observe the additional display messages in the multifunction
display.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Let the engine and coolant cool down.
X Check the coolant level and top up the coolant (Y page 303).
Observe the warning notes as you do so.
X If you have to top up the coolant frequently, have the engine
cooling system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
X If the coolant temperature is less than 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop-start traffic. Warning and indicator lamps in the instrument cluster
281On-board computer and displays Z