climate control MERCEDES-BENZ C-Class SEDAN 2012 W204 Owner's Manual

Index ....................................................... 4Introduction ......................................... 21At a glance ........................................... 27Safety ................................................... 35Opening/closing ................................. 69Seats, steering wheel and mirrors ....91Lights and windshield wipers ..........105Climate control ................................. 121Driving and parking ..........................135On-board computer and displays ....193Stowing and features .......................253Maintenance and care ......................277Breakdown assistance .....................291Wheels and tires ............................... 309Technical data ................................... 341
Contents3

1, 2, 3 ...
115 V socket ...................................... 263
12 V socket see Sockets
4ETS
see ETS/4ETS (Electronic
Traction System)
4MATIC (permanent four-wheel
drive) .................................................. 175
4MATIC off-road system ................... 175
A
ABS (Anti-lock Braking System) Display message ............................ 214
Function/notes ................................ 59
Important safety notes ....................59
Warning lamp ................................. 242
Activating/deactivating cooling
with air dehumidification ................. 126
Active Blind Spot Assist Activating/deactivating (on-
board computer) ............................ 205
Function/information ....................187
Active Driving Assistance package . 187
Active Lane Keeping Assist Activating/deactivating (on-
board computer) ............................ 205
Display message ............................ 229
Function/information ....................190
Active light function ......................... 110
Active Light System Display message ............................ 224
Active service system PLUS
see ASSYST PLUS service interval
display
ADAPTIVE BRAKE ................................. 64
Adaptive Highbeam Assist Display message ............................ 225
Function/notes ............................. 110
Switching on/off (on-board
computer) ...................................... 207
Additives (engine oil) ........................ 349
Air bags Display message ............................ 221
Front air bag (driver, front
passenger) ....................................... 39
Important safety notes ....................38
Knee bag .......................................... 40
PASSENGER AIR BAG OFF
indicator lamp .................................. 42
Pelvis air bag ................................... 41
Safety guidelines ............................. 37
Side impact air bag ..........................40
Window curtain air bag ....................42
Air-conditioning system
see Climate control
AIR FLOW ........................................... 127
Air pressure see Tire pressure
Air vents
Glove box ....................................... 132
Important safety notes ..................131
Rear ............................................... 133
Setting ........................................... 131
Setting the center air vents ...........132
Setting the side air vents ...............132
Alarm system
see ATA (Anti-Theft Alarm system)
Alertness Assistant
see ATTENTION ASSIST
AMG menu (on-board computer) ..... 210
Anti-lock Braking System see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system)
Ashtray ............................................... 262
Assistance menu (on-board
computer) .......................................... 204
ASSYST PLUS see ASSYST PLUS service interval
display
ATA (Anti-Theft Alarm system)
Activating/deactivating ...................67
Function ........................................... 67
Switching off the alarm ....................67
ATTENTION ASSIST
Activating/deactivating .................205
Display message ............................ 228
Function/notes ............................. 182
Audio menu (on-board computer) .... 201
Audio system see separate operating instructions 4Index

CareCarpets .......................................... 289
Car wash ........................................ 284
Display ........................................... 288
Exterior lights ................................ 287
Gear or selector lever ....................288
Matte finish ................................... 285
Notes ............................................. 283
Paint .............................................. 285
Plastic trim .................................... 288
Power washer ................................ 284
Rear view camera .......................... 287
Roof lining ...................................... 289
Seat belt ........................................ 289
Seat cover ..................................... 288
Sensors ......................................... 287
Steering wheel ............................... 288
Tail pipes ....................................... 287
Trim pieces .................................... 288
Washing by hand ........................... 284
Wheels ........................................... 285
Windows ........................................ 286
Wiper blades .................................. 286
Wooden trim .................................. 288
Cargo tie down rings ......................... 258
Car wash (care) ................................. 284
CD player/CD changer (on-board
computer) .......................................... 202
Cell phone see Mobile phone
Center console ..................................... 32
Central locking Automatic locking (on-board
computer) ...................................... 208
Locking/unlocking (SmartKey) ........70
Changing bulbs
Brake lamps ................................... 116
Cornering light function .................115
High-beam headlamps ...................115
Important safety notes ..................113
Low-beam headlamps ....................114
Overview of bulb types ..................114
Parking lamps ................................ 115
Reversing lamps ............................ 116
Standing lamps (front) ...................115
Child-proof locks
Important safety notes ....................57
Rear doors ....................................... 57Children
In the vehicle ................................... 53
Restraint systems ............................ 53
Child seat
LATCH-type (ISOFIX) child seat
anchors ............................................ 55
Special seat belt retractor ...............55
Top Tether ....................................... 56
Cigarette lighter ................................ 262
Climate control Automatic climate control (3-
zone) .............................................. 125
Controlling automatically ...............127
Cooling with air dehumidification ..126
Defrosting the windows .................130
Defrosting the windshield ..............129
Dual-zone automatic climate
control ........................................... 123
Important safety notes ..................122
Indicator lamp ................................ 127
Maximum cooling .......................... 130
Notes on using automatic climate
control ................................... 124, 126
Overview of systems ......................122
Problems with cooling with air
dehumidification ............................ 127
Problem with the rear window
defroster ........................................ 130
Rear control panel .........................125
Refrigerant ..................................... 350
Setting the air distribution .............128
Setting the airflow .........................129
Setting the air vents ......................131
Setting the climate mode (AIR
FLOW) ............................................ 127
Setting the temperature ................128
Switching air-recirculation mode
on/off ............................................ 130
Switching on/off ........................... 126
Switching residual heat on/off ......131
Switching the rear window
heating on/off ............................... 130
Switching the ZONE function on/
off .................................................. 129
Cockpit
Overview .......................................... 28
see Instrument cluster 6Index

COMANDsee separate operating instructions
Combination switch .......................... 109
Compass Calibrating ..................................... 276
Calling up ....................................... 275
Setting ........................................... 275
Consumption statistics (on-board
computer) .......................................... 199
Convenience closing feature .............. 84
Convenience opening feature ............ 84
Coolant (engine) Checking the level .........................280
Display message ............................ 225
Notes ............................................. 350
Temperature (on-board computer) . 210
Temperature gauge ........................ 194
Warning lamp ................................. 247
Cooling
see Climate control
Cornering light function
Changing bulbs .............................. 115
Display message ............................ 222
Function/notes ............................. 110
Crash-responsive emergency
lighting ............................................... 113
Cruise control Cruise control lever .......................160
Deactivating ................................... 161
Display message ............................ 233
Driving system ............................... 159
Function/notes ............................. 159
Important safety notes ..................159
LIM indicator lamp .........................160
Setting a speed .............................. 160
Storing and maintaining current
speed ............................................. 160
Cup holder
Center console .............................. 260
Important safety notes ..................259
Rear compartment .........................260
Customer Assistance Center (CAC) ... 25
Customer Relations Department ....... 25D
Dashboard see Cockpit
Data
see Technical data
Daytime running lamps
Display message ............................ 224
Switching on/off (on-board
computer) ...................................... 207
Switching on/off (switch) ..............107
Delayed switch-off
Exterior lighting (on-board
computer) ...................................... 207
Interior lighting .............................. 208
Digital speedometer ......................... 199
Display (cleaning instructions) ........ 288
Display messages Calling up (on-board computer) .....213
Driving systems ............................. 228
Engine ............................................ 225
General notes ................................ 213
Hiding (on-board computer) ...........213
KEYLESS-GO .................................. 238
Lights ............................................. 222
Safety systems .............................. 214
Service interval display ..................282
SmartKey ....................................... 238
Tires ............................................... 233
Vehicle ........................................... 236
Distance display (on-board
computer) .......................................... 204
Distance recorder ............................. 199
see Odometer
see Trip odometer
Distance warning (warning lamp) .... 249
DISTRONIC PLUS Deactivating ................................... 169
Display message ............................ 231
Displays in the multifunction
display ........................................... 168
Driving tips .................................... 170
Function/notes ............................. 161
Important safety notes ..................161
Setting the specified minimum
distance ......................................... 168
Warning lamp ................................. 249Index7

F
Filler cap see Fuel filler flap
First-aid kit ......................................... 292
Flat tire Changing a wheel/mounting the
spare wheel ................................... 293
MOExtended run-flat system .........297
Preparing the vehicle .....................293
Raising the vehicle .........................295
Floormat ............................................. 276
Frequencies Garage door opener .......................275
Front fog lamps ................................. 108
Display message ............................ 223
Switching on/off ........................... 108
Front windshield
see Windshield
Fuel
Additives ........................................ 348
Consumption statistics ..................199
Displaying the current
consumption .................................. 199
Displaying the range ......................199
Driving tips .................................... 155
Flexible fuel vehicles ......................347
Fuel gauge ....................................... 29
Important safety notes ..................347
Premium-grade unleaded gasoline . 347
Problem (malfunction) ...................153
Refueling ........................................ 150
Specifications ................................ 348
Tank content/reserve fuel .............346
Fuel filler flap
Emergency release ........................151
Opening/closing ............................ 151
Fuel level
Calling up the range (on-board
computer) ...................................... 199
Fuel tank
Capacity ........................................ 346
Problem (malfunction) ...................153
Fuse allocation chart (vehicle tool
kit) ...................................................... 292
Fuses Allocation chart ............................. 305
Before changing ............................. 305Dashboard fuse box .......................305
Fuse box in the engine
compartment ................................. 306
Fuse box in the trunk .....................306
Important safety notes ..................305
G
Garage door opener Clearing the memory .....................274
Frequencies ................................... 275
Notes ............................................. 270
Opening/closing the garage door ..273
Programming (button in the rear-
view mirror) ................................... 271
Gasoline ............................................. 150
Gear indicator (on-board
computer) .......................................... 210
Gear or selector lever (cleaning
guidelines) ......................................... 288
Genuine Mercedes-Benz parts ......... 342
Glove box ........................................... 254
H
Handbrake see Parking brake
Hazard warning lamps ...................... 109
Headlamp cleaning system Notes ............................................. 351
Headlamps
Adding fluid to cleaning system .....281
Cleaning system (function) ............109
Fogging up ..................................... 112
see Automatic headlamp mode
Head restraints
Adjusting ......................................... 95
Adjusting (electrically) .....................96
Adjusting (manually) ........................95
Adjusting (rear) ................................ 96
Installing/removing (rear) ................97
Luxury .............................................. 96
see NECK-PRO head restraints
see NECK-PRO head restraints/
NECK-PRO luxury head restraints
Heating
see Climate control
10Index

Remote controlGarage door opener .......................270
Reporting safety defects .................... 25
Reserve (fuel tank) see Fuel
Reserve fuel
Display message ............................ 228
Warning lamp ................................. 246
see Fuel
Residual heat (climate control) ........ 131
Restraint system see SRS (Supplemental Restraint
System)
Reverse gear
Engaging (automatic
transmission) ................................. 142
Roadside Assistance (breakdown) .... 22
Roller blind see Roller sunblind
Roller sunblind
Panorama roof with power tilt/
sliding panel ..................................... 88
Rear side windows .........................261
Rear window .................................. 261
Roof carrier ........................................ 259
Roof lining and carpets (cleaning
guidelines) ......................................... 289
Roof load (maximum) ........................ 351
Route see Route guidance (navigation)
Route guidance (navigation) ............ 200
S
Safety Children in the vehicle .....................53
Child restraint systems ....................53
Occupant Classification System
(OCS) ............................................... 42
Overview of occupant safety
systems ........................................... 36
Safety systems
see Driving safety systems
Seat belts
Adjusting the height ......................... 51
Belt force limiters ............................ 52
Cleaning ......................................... 289
Correct usage .................................. 49
Emergency Tensioning Devices ........ 52
Fastening ......................................... 50
Important safety guidelines .............48
Releasing ......................................... 51
Safety guidelines ............................. 37
Special seat belt retractor ...............55
Warning lamp ................................. 239
Warning lamp (function) ................... 51
Seats
Adaptive seat backrests (AMG
vehicles) .......................................... 97
Adjusting (electrically) .....................94
Adjusting (manually and
electrically) ...................................... 94
Adjusting lumbar support ................97
Adjusting the 4-way lumbar
support ............................................ 97
Adjusting the head restraint ............95
Cleaning the cover .........................288
Correct driver's seat position ........... 92
Important safety notes ....................93
Seat heating problem ......................98
Seat ventilation problem ..................99
Storing settings (memory
function) ........................................ 103
Switching seat heating on/off .........98
Switching seat ventilation on/off ....98
Sensors (cleaning instructions) ....... 287
Service see ASSYST PLUS service interval
display
Service interval display
Displaying service messages .........283
Hiding service messages ...............283
Notes ............................................. 283
Service messages ..........................282
Service menu (on-board computer) . 206
Service products Brake fluid ..................................... 350
Capacities ...................................... 346
Coolant (engine) ............................ 350
Engine oil ....................................... 349
Fuel ................................................ 347
Important safety notes ..................344
Refrigerant (air-conditioning
system) .......................................... 350
Washer fluid ................................... 351Index15

Stowage well beneath the trunk
floor .................................................... 258
Summer opening see Convenience opening feature
Summer tires ..................................... 312
Sun visor ............................................ 260
Supplemental Restraint System see SRS (Supplemental Restraint
System)
Surround lighting (on-board
computer) .......................................... 207
Switching air-recirculation mode
on/off ................................................. 130
Switching off the alarm (ATA) ............ 67
T
Tachometer ........................................ 195
Tail lamps Display message ............................ 223
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 29
Technical data
Notes ............................................. 342
Tires/wheels ................................. 335
Vehicle data ................................... 351
TELEAID
Call priority .................................... 268
Display message ............................ 218
Downloading destinations
(COMAND) ..................................... 269
Emergency call .............................. 266
Important safety notes ..................264
Locating a stolen vehicle ...............270
MB info call button ........................268
Remote vehicle locking ..................270
Roadside Assistance button ..........267
Search & Send ............................... 269
Self-test ......................................... 265
System .......................................... 265
Vehicle remote unlocking ..............269
Telephone
Accepting a call ............................. 203
Display message ............................ 237
Menu (on-board computer) ............202
Number from the phone book ........ 203
Redialing ........................................ 203
Rejecting/ending a call .................203
Temperature
Coolant .......................................... 194
Coolant (on-board computer) ......... 210
Engine oil (on-board computer) ...... 210
Outside temperature ...................... 195
Setting (climate control) ................128
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........67
Immobilizer ...................................... 66
Through-loading feature ................... 256
Tilt/sliding sunroof see Sliding sunroof
Timing (RACETIMER) ......................... 211
Tiredness assistant see ATTENTION ASSIST
Tire pressure
Calling up (on-board computer) .....319
Checking manually ........................317
Display message ............................ 233
Maximum ....................................... 316
Notes ............................................. 315
Pressure loss warning ....................317
Recommended ............................... 313
Tire pressure monitoring system
Function/notes ............................. 319
Restarting ...................................... 321
Warning lamp ................................. 250
Tires
Aspect ratio (definition) .................333
Average weight of the vehicle
occupants (definition) ....................331
Bar (definition) ............................... 331
Characteristics .............................. 331
Checking ........................................ 311
Definition of terms .........................331
Direction of rotation ......................334
Display message ............................ 233
Distribution of the vehicle
occupants (definition) ....................334
DOT, Tire Identification Number
(TIN) ............................................... 330
DOT (Department of
Transportation) (definition) ............331
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 332Index17

CockpitFunctionPage:Steering wheel paddle
shifters
145
;Cruise control lever160=Instrument cluster29?HornAPARKTRONIC warning
display (Canada only)
175
BOverhead control panel33CClimate control systems122DIgnition lock137Start/Stop button137FunctionPageEAdjusts the steering wheel
manually
99
FAdjusts the steering wheel
electrically
99
GCombination switch109HParking brake154IOn-board diagnostic
interface
24
JOpens the hood278KReleases the parking brake154LLight switch10628CockpitAt a glance

Useful information ............................122
Overview of climate control sys-
tems ................................................... 122
Operating the climate control sys-
tem ..................................................... 126
Setting the air vents .........................131121Climate control

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops ( Y page 24).
Overview of climate control systems
Important safety notes
GWARNING
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 blocked filter replaced at a Mercedes-
Benz Center as soon as possible.
GWARNING
Follow the recommended settings for heating
and cooling given on the following pages.
Otherwise, the windows could fog up,
impairing visibility and endangering you and
others.
The automatic climate control adjusts the
temperature and the humidity of the vehicle
interior and filters undesired substances from
the air.
The automatic climate control is only
operational when the engine is running. 11
Optimum operation is only achieved if you
drive with the side windows and sliding
sunroof/panorama roof with power tilt/
sliding panel closed.
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature ( Y page 84).
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. A clogged 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
function may be activated automatically an
hour after the SmartKey is removed. The
vehicle is then ventilated for 30 minutes to
dry the air-conditioning system.11 Automatic climate control: the residual heat function can only be activated/deactivated when the ignition
is switched off.122Overview of climate control systemsClimate control