2012 MERCEDES-BENZ C-Class COUPE sensor

Matte finish ................................... 272
Notes ............................................. 269
Paint .............................................. 271
Plastic trim .................................... 274
Power washer ................................ 271
Rear view camera .......................... 273
Roof lining ...................................... 275
Seat belt ........................................ 275
Seat cover ..................................... 274
Sensors ......................................... 273
Steering wheel ............................... 274
Tail pipes ....................................... 273
Trim pieces .................................... 274
Washing by hand ........................... 270
Wheels ........................................... 271
Windows ........................................ 272
Wiper blades .................................. 272
Wooden trim .................................. 274
Cargo tie down rings ......................... 245
Car wash (care) ................................. 270
CD player/CD changer (on-board
computer) .......................................... 190
Cell phone see Mobile phone
Center console ..................................... 32
Central locking Automatic locking (on-board
computer) ...................................... 196
Locking/unlocking (SmartKey) ........68
Changing bulbs
Brake lamps ................................... 110
Cornering light function .................109
High-beam headlamps ...................108
Important safety notes ..................106
Low-beam headlamps ....................108
Overview of bulb types ..................107
Parking lamps ................................ 109
Reversing lamps ............................ 110
Standing lamps (front) ...................109
Children
In the vehicle ................................... 52
Restraint systems ............................ 52
Child seat
LATCH-type (ISOFIX) child seat
anchors ............................................ 54
Special seat belt retractor ...............54
Top Tether ....................................... 55
Cigarette lighter ................................ 248Climate control
Controlling automatically ...............117
Cooling with air dehumidification ..117
Defrosting the windows .................119
Defrosting the windshield ..............119
Dual-zone automatic climate
control ........................................... 115
Important safety notes ..................114
Indicator lamp ................................ 117
Maximum cooling .......................... 119
Notes on using automatic climate
control ........................................... 116
Overview of systems ......................114
Problems with cooling with air
dehumidification ............................ 117
Problem with the rear window
defroster ........................................ 120
Refrigerant ..................................... 330
Setting the air distribution .............118
Setting the airflow .........................118
Setting the air vents ......................120
Setting the temperature ................118
Switching air-recirculation mode
on/off ............................................ 120
Switching on/off ........................... 117
Switching the rear window
heating on/off ............................... 120
Switching the ZONE function on/
off .................................................. 118
Cockpit
Overview .......................................... 28
see Instrument cluster
COMAND
see separate operating instructions
Combination switch .......................... 103
Compass Calibrating ..................................... 261
Calling up ....................................... 260
Setting ........................................... 260
Consumption statistics (on-board
computer) .......................................... 187
Convenience closing feature .............. 82
Convenience opening feature ............ 82
Coolant (engine) Checking the level .........................266
Display message ............................ 213
Notes ............................................. 331
Temperature (on-board computer) . 1986Index

J
Jack Storage location ............................ 278
Using ............................................. 281
Jump starting (engine) ...................... 287
K
Key see SmartKey
KEYLESS-GO
Convenience closing feature ............83
Display message ............................ 226
Locking ............................................ 69
Start/Stop button .......................... 125
Starting the engine ........................127
Unlocking ......................................... 69
Key positions
KEYLESS-GO .................................. 125
SmartKey ....................................... 125
Kickdown
Driving tips .................................... 132
Manual drive program ....................136
Knee bag .............................................. 40
L
Lamps see Warning and indicator lamps
Lane-change assistant
see Blind Spot Assist
Lane detection (automatic)
see Lane Keeping Assist
Lane Keeping Assist
Activating/deactivating .................193
Display message ............................ 217
Function/information ....................172
Lane Tracking package ..................... 170
Lap time (RACETIMER) ...................... 198
LATCH-type (ISOFIX) child seat
anchors ................................................ 54
Lighting see Lights
Lights
Activating/deactivating the
interior lighting delayed switch-off . 196
Automatic headlamp mode ............102
Cornering light function .................104
Display message ............................ 210
Driving abroad ............................... 100
Fog lamps ...................................... 102
Hazard warning lamps ...................103
High beam flasher .......................... 103
High-beam headlamps ...................103
Light switch ................................... 100
Low-beam headlamps ....................101
Parking lamps ................................ 100
Rear fog lamp ................................ 102
Switching Adaptive Highbeam
Assist on/off ................................. 195
Switching the daytime running
lamps on/off (on-board
computer) ...................................... 195
Switching the daytime running
lamps on/off (switch) ....................101
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 195
Switching the surround lighting
on/off (on-board computer) ..........195
Turn signals ................................... 103
see Changing bulbs
see Interior lighting
Light sensor (display message) ....... 213
LIM indicator lamp Cruise control ................................ 147
DISTRONIC PLUS ........................... 151
Loading guidelines ............................ 242
Locking see Central locking
Locking (doors)
Automatic ........................................ 76
Emergency locking ........................... 77
From inside (central locking
button) ............................................. 76
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 196
Low-beam headlamps Changing bulbs .............................. 108
Display message ............................ 210
Setting for driving abroad
(symmetrical) ................................. 100
Switching on/off ........................... 101Index11

Displaying a service message ........269
Display messages ..........................201
DISTRONIC PLUS ........................... 155
Factory settings submenu .............198
Important safety notes ..................182
Instrument cluster submenu ..........194
Lighting submenu .......................... 195
Menu overview .............................. 186
Message memory .......................... 201
Navigation menu ............................ 188
Operation ....................................... 183
RACETIMER ................................... 198
Service menu ................................. 194
Settings menu ............................... 194
Standard display ............................ 187
Telephone menu ............................ 190
Trip menu ...................................... 187
Vehicle submenu ........................... 196
Video DVD operation .....................190
On-board diagnostics interface .......... 23
Opening and closing the side trim
panels ................................................. 109
Operating safety On-board diagnostics interface ........23
Operating system
see On-board computer
Outside temperature display ........... 183
Overhead control panel ...................... 33
P
Paint code number ............................ 325
Paintwork (cleaning instructions) ... 271
Panic alarm .......................................... 56
Panorama roof with power tilt/
sliding panel Opening/closing .............................. 85
Opening/closing the roller
sunblind ........................................... 85
Problem (malfunction) .....................86
Resetting ......................................... 86
Panorama sliding sunroof
Important safety notes ....................84
Parcel net ........................................... 243
Parking ............................................... 140
Important safety notes ..................140
Parking brake ................................ 141
Position of exterior mirror, front-
passenger side ................................. 96
Rear view camera .......................... 168
see PARKTRONIC
Parking aid
Parking Guidance ........................... 165
see Exterior mirrors
see PARKTRONIC
Parking brake
Display message ............................ 204
Notes/function .............................. 141
Parking Guidance
Display message ............................ 218
Important safety notes ..................165
Parking lamps (changing bulbs) ...... 109
PARKTRONIC Deactivating/activating .................164
Driving system ............................... 162
Function/notes ............................. 162
Problem (malfunction) ...................165
Range of the sensors .....................162
Warning display ............................. 163
PASSENGER AIR BAG OFF indicator
lamp ...................................................... 42
Pedals ................................................. 142
Plastic trim (cleaning instructions) . 274
Power washers .................................. 271
Power windows see Side windows
PRE-SAFE ®
Brake (vehicles with
DISTRONIC PLUS) Display message ............................ 206
Function/notes ................................ 62
Switching on/off ........................... 193
Warning lamp ................................. 237
Preventive occupant safety
system
see PRE-SAFE ®
(Preventive
occupant safety system)
Product information ............................ 20
Program selector button .................. 132
Pulling away Automatic transmission .................127
Q
Qualified specialist workshop ........... 23
Index13

R
RACE START (AMG vehicles) ............. 161
RACETIMER (on-board computer) .... 198
Radar sensor system Activating/deactivating .................196
Display message ............................ 217
Radio
Selecting a station .........................189
see separate operating instructions
Reading lamp ..................................... 106
Rear compartment Setting the air vents ......................122
Rear fog lamp
Display message ............................ 211
Switching on/off ........................... 102
Rear seat (folding the backrest
forwards/back) ................................. 244
Rear view camera Cleaning instructions .....................273
Function/notes ............................. 168
Rear-view mirror
Anti-glare (manual) ..........................95
Dipping (automatic) .........................96
Rear window defroster
Problem (malfunction) ...................120
Rear window heating
Switching on/off ........................... 120
Refueling
Fuel gauge ....................................... 29
Important safety notes ..................137
Refueling process ..........................138
see Fuel
Releasing the parking lock
manually (automatic
transmission) ..................................... 137
Remote control Garage door opener .......................256
Reporting
Malfunctions relevant to safety ........ 24
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 216
Warning lamp ................................. 234
see Fuel Restraint system
see SRS (Supplemental Restraint
System)
Reverse gear
Engaging (automatic
transmission) ................................. 130
Roadside Assistance (breakdown) .... 21
Roller blind see Roller sunblind
Roller sunblind
Opening/closing .............................. 85
Panorama roof with power tilt/
sliding panel ..................................... 85
Roof carrier ........................................ 246
Roof lining and carpets (cleaning
guidelines) ......................................... 275
Roof load (maximum) ........................ 332
Route see Route guidance (navigation)
Route guidance (navigation) ............ 188
S
Safety Children in the vehicle .....................52
Child restraint systems ....................52
Occupant Classification System
(OCS) ............................................... 42
Overview of occupant safety
systems ........................................... 36
Safety systems
see Driving safety systems
Seat belts
Belt force limiters ............................ 51
Cleaning ......................................... 275
Correct usage .................................. 48
Emergency Tensioning Devices ........ 51
Fastening ......................................... 49
Important safety guidelines .............48
Releasing ......................................... 50
Safety guidelines ............................. 37
Special seat belt retractor ...............54
Warning lamp ................................. 227
Warning lamp (function) ................... 50
Seats
Adjusting (electrically) .....................90
Adjusting (manually and
electrically) ...................................... 90
14Index

Adjusting the 4-way lumbar
support ............................................ 91
Adjusting the head restraint ............91
Cleaning the cover .........................274
Correct driver's seat position ........... 88
Folding the backrests forward/
back ................................................. 91
Important safety notes ....................89
Seat backrest display message .....225
Seat backrest display message
(12-button multifunction steering
wheel) ............................................ 225
Seat heating problem ......................92
Seat ventilation problem ..................93
Storing settings (memory
function) .......................................... 97
Switching seat heating on/off .........92
Switching seat ventilation on/off ....92
Sensors (cleaning instructions) ....... 273
Service see ASSYST PLUS service interval
display
Service interval display
Displaying service messages .........269
Hiding service messages ...............269
Notes ............................................. 269
Service messages ..........................268
Service menu (on-board computer) . 194
Service products Brake fluid ..................................... 331
Capacities ...................................... 328
Coolant (engine) ............................ 331
Engine oil ....................................... 330
Fuel ................................................ 328
Important safety notes ..................326
Refrigerant (air-conditioning
system) .......................................... 330
Washer fluid ................................... 332
Settings
Factory (on-board computer) .........198
On-board computer .......................194
Setting the air distribution ............... 118
Setting the airflow ............................ 118
SETUP (on-board computer) ............. 198
Side impact air bag ............................. 40
Side marker lamp (display
message) ............................................ 212Side windows
Convenience closing feature ............82
Convenience opening feature ..........82
Important safety information ...........81
Opening/closing .............................. 81
Problem (malfunction) .....................83
Resetting ......................................... 83
Sliding sunroof
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery .......................72
Changing the programming .............71
Checking the battery .......................72
Convenience closing feature ............82
Convenience opening feature ..........82
Display message ............................ 226
Door central locking/unlocking .......68
Important safety notes ....................68
Loss ................................................. 74
Mechanical key ................................ 71
Positions (ignition lock) .................125
Problem (malfunction) .....................74
Starting the engine ........................127
Snow chains ...................................... 297
Sockets Points to observe before use .........249
Rear compartment .........................249
Spare wheel
Notes/data .................................... 321
Storage location ............................ 279
see Emergency spare wheel
Specialist workshop ............................ 23
Speed, controlling see Cruise control
Speedometer
Digital ............................................ 187
In the Instrument cluster .................29
Segments ...................................... 183
Selecting the unit of
measurement ................................ 194
see Instrument cluster
SPORT handling mode
Activating/deactivating (AMG
vehicles) .......................................... 60
Warning lamp ................................. 232Index15

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 23).
Occupant safety
Overview of occupant safety
In this section, you will learn the most
important facts about the restraint system
components of the vehicle.
The restraint system consists of:
R seat belts
R child restraint systems
R LATCH-type (ISOFIX) child seat anchors
Additional protection is provided by:
R SRS (Supplemental Restraint System)
R NECK-PRO head restraints
R Air bag system components with:
- PASSENGER AIR BAG OFF indicator lamp
- front-passenger seat with Occupant
Classification System (OCS)
The different air bag systems work
independently of each other. The protective
functions of the system work in conjunction
with each other. Not all air bags are deployed
in an accident.
GWARNING
Modifications to or work improperly
conducted on restraint system components
or their wiring, as well as tampering with
interconnected electronic systems, can lead
to the restraint systems no longer functioning
as intended.
Air bags or Emergency Tensioning Devices
(ETDs), for example, could deploy
inadvertently or fail to deploy in accidents
although the deceleration threshold for air
bag deployment is exceeded. Therefore,
never modify the restraint systems. Do not
tamper with electronic components or their
software.
i See "Children in the vehicle"
( Y page 52) for more information on
infants and children traveling with you in
the vehicle and restraints for infants and
children.
SRS (Supplemental Restraint System)
Introduction
SRS consists of:
R the 6 SRS warning lamp
R air bags
R air bag control unit (with crash sensors)
R Emergency Tensioning Devices
R belt force limiters
SRS reduces the risk of occupants coming
into contact with the vehicle's interior in the
event of an accident. It can also reduce the
effect of the forces to which occupants are
subjected during an accident.
SRS warning lamp
SRS functions are checked regularly when
you switch on the ignition and when the
engine is running. Therefore, malfunctions
can be detected in good time.
The 6 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started.
The SRS components are in operational
readiness when the 6 SRS warning lamp
is not lit while the engine is running .
36Occupant safetySafety

Your vehicle has adaptive, two-stage front air
bags. In the event of a collision, the air bag
control unit evaluates the vehicle
deceleration. In the first deployment stage,
the front air bag is filled with enough
propellant gas to reduce the risk of injuries.
The front air bag is fully deployed if a second
deployment threshold is exceeded within a
few milliseconds.
The deployment of the front-passenger front
air bag is also influenced by the weight
category of the front passenger, which is
determined by the Occupant Classification
System (OCS) ( Y page 42).
The lighter the passenger side occupant, the
higher the vehicle deceleration rate required
(predicted at the start of the impact) for
second stage inflation of the front-passenger
front air bag. In the second stage, the front
air bags are inflated with the maximum
amount of propellant gas available.
The front air bags are not deployed in
situations where a low impact severity is
predicted. You will then be protected by the
fastened seat belt.
The front-passenger front air bag will only
deploy if:
R the system, based on the OCS weight
sensor readings, detects that the front-
passenger seat is occupied.
R the 45 indicator lamp in the center
console is not lit, ( Y page 42).
R the air bag control unit predicts a high
impact severity.Driver's knee bag
Driver's knee bag : provides additional
protection for the driver against:
R knee injuries
R thigh injuries
R lower leg injuries
Driver's knee bag : deploys below the
steering wheel. During a frontal impact, if the
system determines that air bag deployment
can offer additional protection to that
provided by the seat belt, driver's knee
bag : is deployed along with the driver's air
bag. The driver's knee bag : operates best
in conjunction with a properly positioned and
fastened seat belt.
Side impact air bags
GWARNING
The pressure sensors for side impact air bag
control are located in the doors. Do not
modify any components of the doors or door
trim panels including, for example, the
addition of door speakers.
Improper repair work on the doors or the
modification or addition of components to the
doors create a risk of rendering the side
impact air bags inoperative or causing
unintended air bag deployment. Work on the
doors must therefore only be performed by
qualified technicians. Contact an authorized
Mercedes-Benz Center.
40Occupant safetySafety

Pelvis air bags : will not deploy in side
impacts which do not exceed the system's
preset deployment thresholds for lateral
acceleration/deceleration. You will then be
protected by the fastened seat belt.
If the OCS detects that the front-passenger
seat is not occupied and the front-passenger
seat belt is not fastened (the belt tongue is
not engaged in the seat belt buckle), the
pelvis air bag on the front-passenger side will
not deploy. The pelvis air bag on the front-
passenger side will deploy if the front-
passenger seat belt is fastened, regardless of
whether the front-passenger seat is occupied
or not.
Window curtain air bags
The window curtain air bags enhance the level
of protection for the head, but not chest or
arms, of the vehicle occupants on the side of
the vehicle on which the impact occurs.
The window curtain air bags are integrated
into the side of the roof frame and deploy in
the area extending from the front door (A-
pillar) to the rear sidewall (C-pillar).
Window curtain air bags : are deployed:
R on the side on which an impact occurs
R at the start of an accident with a high rate
of lateral vehicle deceleration or
acceleration, e.g. in a side impact
R regardless of whether the front-passenger
seat is occupied
R independently of seat belt use
R independently of the front air bags
Window curtain air bags : will not deploy in
impacts with deceleration rates which do not
exceed the system's preset deployment
thresholds for vehicle deceleration or
acceleration. You will then be protected by
the fastened seat belt.
Occupant Classification System
(OCS)
How the occupant classification
system works
The Occupant Classification System (OCS)
categorizes the occupant on the front-
passenger seat by means of a weight sensor.
The front-passenger front air bag is
deactivated automatically for certain weight
categories. The 45 indicator lamp
shows you the current status. If the
45 indicator lamp is illuminated, the
front-passenger front air bag is deactivated.
The system does not deactivate:
R the side impact air bag
R the pelvis air bag
R the window curtain air bag
R the Emergency Tensioning Devices
To be classified correctly, the front passenger
must sit:
R with the seat belt fastened correctly
R in a position that is as upright as possible
with their back against the seat backrest
R with their feet on the floor
If the front-passenger's weight is transferred
to another object in the vehicle (e.g. by
leaning on armrests), OCS may not be able to
approximate the occupant's weight category.
If the front-passenger seat, the seat cover or
the seat cushion are damaged, have the
necessary repair work carried out at an
authorized Mercedes-Benz Center.
For safety reasons, Mercedes-Benz
recommends that you only use seat
accessories which have been approved by
Mercedes-Benz.
42Occupant safetySafety