2011 MERCEDES-BENZ C-CLASS SALOON check engine

Convenience opening/closing (air
recirculation
)................................. 142
Cooling with aird ehumidification..137
Demisting the windows .................. 140
Demisting the windscreen .............140
Important safety notes ..................134
Indicator lamp ................................ 138
Notes on using THERMATIC auto-
matic climate control .....................135
Notes on using THERMOTRONIC
automatic climate control ..............137
Overview of systems ......................134
Problems with cooling with air
dehumidification ............................ 138
Problem with the rear window
heating .......................................... 141
Rea rcontrol panel ......................... 136
Setting the aird istribution.............139
Setting the airflow .........................139
Setting the airv ents...................... 147
Setting the climate mode (AIR
FLOW) ............................................ 138
Setting the temperature ................138
Switching air-recirculation mode
on/off ............................................ 141
Switching on/off ........................... 137
Switching residual hea ton/off ......142
Switching the ZONE function on/
off .................................................. 140
THERMATIC automatic climate
control (2-zone) ............................. 135
THERMOTRONIC (3-zone) auto-
matic climate control .....................136
Coat hooks ......................................... 310
Cockpit Overview .......................................... 32
see Instrument cluster
COMAND Online
see separate operating instructions
Combination switch ..........................120
Combine dluggage cover and net ....309
Constant headlamp mode see Daytime driving lamps
Consumption statistics
On-board computer (12-button
multifunctio nsteering wheel) ........231
On-board computer (4-button
multifunctio nsteering wheel) ........226Convenience closing feature
..............97
Convenience opening/closing (air-
recirculation mode) ........................... 142
Convenience opening feature ............97
Coolan t(engine)
Checkin gthe level ......................... 324
Display message (12-button mul-
tifunctio nsteering wheel) ..............270
Display message (4-button multi-
function steering wheel) ................268
Notes ............................................. 383
Temperature display (12-button
multifunctio nsteering wheel;
AMG )............................................. 245
Temperature gauge (12-button
multifunction steering wheel) ........226
Temperature gauge (4-button
multifunctio nsteering wheel) ........222
Warning lamp ................................. 298
Cooling
see Climate control
Cornering lamps
Changing bulbs .............................. 127
Cornering light function
Display message (12-button mul-
tifunctio nsteering wheel) ..............264
Display message (4-button multi-
function steering wheel) ................261
Function/notes ............................. 121
Crash-responsive emergency light-
ing ....................................................... 125
Cruise control Cruise control leve r....................... 178
Deactivating ................................... 180
Display message (12-button mul-
tifunctio nsteering wheel) ..............279
Display message (4-button multi-
function steering wheel) ................272
Driving system ............................... 178
Important safety notes ..................178
LIM indicator lamp .........................178
Selecting ........................................ 179
Setting aspeed .............................. 180
Storing and maintaining current
speed ............................................. 179 8
Index

Symmetrical dipped beam
.............118
Towing atrailer .............................. 215
Tyr egrip ........................................ 177
Wet road surface ........................... 176
Dynamic handling package with
sports mode ....................................... 192 E
EASY-ENTRY feature Activating/deactivating (12-but-
ton multifunctio nsteering wheel) ..243
Function/notes ............................. 111
EASY-EXIT feature
Activating/deactivating (12-but-
ton multifunctio nsteering wheel) ..243
Crash-responsive ........................... 112
Function/notes ............................. 111
EASY-PACK load-securing kit ...........310
EBD (electronic brake force distri-
bution)
Function/notes ................................ 78
EBD (Electronic Brake force Distri-
bution)
Display message (12 button mul-
tifunctio nsteering wheel) ..............257
EBD (Electronic Brake-force Distri-
bution)
Display message (4-button multi-
function steering wheel) ................251
ECO start/stop function
Deactivating/activating .................158
General information .......................156
Electrical fuses
see Fuses
Electronic Brake force Distribution
see EBD (Electronic Brake force
Distribution)
Electronic Stability Program
see ESP ®
(Electroni cStability Program)
Electronic Traction System
see ETS/4ETS (Electronic Trac-
tionS ystem)
Emergency key
Unlocking the driver's door ..............91
Emergency key element
Function/notes ................................ 86
Locking vehicle ................................ 91Emergency release
Driver's door .................................... 91
Fuel filler fla p................................. 172
Emergency spare wheel
Notes/data .................................... 369
Storage location ............................ 336
Emergency unlocking
Boot ................................................. 95
Tailgate ............................................ 95
Vehicle ............................................. 91
Engine
ECO start/stop function ................156
Emergency starting ........................354
Engine number ............................... 379
Running irregularl y......................... 159
Starting problems ..........................159
Starting the engine with the key ....155
Starting with KEYLESS GO .............155
Stopping ........................................ 174
Warning lamp (engine diagnos-
tics) ............................................... 298
Engine electronics
Notes ............................................. 377
Problem (fault) ............................... 159
Engine oil
Additives ........................................ 382
Checking the oil level ..................... 323
Checking the oil level using the
dipstick .......................................... 323
Display message (12-button mul-
tifunctio nsteering wheel) ..............271
Display message (4-button multi-
function steering wheel) ................269
Filling capacity ............................... 382
Notes about oil grades ................... 381
Notes on oil level/consumption ....323
Temperature (12-button multi-
function steering wheel) ................245
Topping up ..................................... 324
Viscosity ........................................ 382
Environmental protection
Note ................................................ .26
Returning an end-of-life vehicle .......26
ESP ®
(Electronic Stability Pro-
gram) AMG menu (on-board computer) ...245
Deactivating/activating (AMG
vehicles) .......................................... 76 Index
11

Instrumen
tcluster lighting
Multifunction steering wheel with
12 buttons ....................................... 37
Multifunctio nsteering wheel with
4b utton s......................................... 34
Instrument lighting
see Instrument cluster lighting
Integrated child seat
ICS padded pla ytable ...................... 65
Important safety guidelines .............63
Side hea drestraints ........................ .66
Storing, IC Spadded play table and
side head restraint s......................... 67
Intelligen tLight System
Activating/deactivatin g(12-but-
ton multifunctio nsteering wheel) ..240
Display message (12-button mul-
tifunctio nsteering wheel) ..............267
Setting the dipped-bea mhead-
lamps for driving on the right/left .240
Interior lighting ................................. 124
Automatic control system ..............124
Delayed switch-off (12-button
multifunctio nsteering wheel) ........241
Emergency lighting ........................125
Manual control ............................... 125
Overview ........................................ 124
Reading lamp ................................. 124
Interior motion sensor ........................81
ISOFIX child seat securing system ....60 J
Jack Storage location ............................ 335
Using ............................................. 343
Jump starting (engine) ......................350 K
Key Changing the battery .......................87
Checking the battery .......................87
Convenience closing feature ............97
Convenience opening feature ..........97
Display message (4-button multi-
function steering wheel) ................288
Door central locking/unlocking .......84 Emergency key element ................... 86
Loss
................................................. 88
Modifying the programming .............85
Positions (ignition lock) .................153
Problem (malfunction) .....................88
Starting the engine ........................155
KEYLESS-GO
Convenience closing ........................98
Display message (12-button mul-
tifunctio ndisplay) .......................... 289
Display message (4-button multi-
function display) ............................ 288
Locking ............................................ 85
Start/Stop button .......................... 153
Starting the engine ........................155
Unlocking ......................................... 85
Keyp ositions
Key ................................................ 153
KEYLESS GO .................................. 153
Keys
Display message (12-button mul-
tifunctio nsteering wheel) ..............289
Kickdown
Driving tips .................................... 163
Manual drive program ....................167
Kneebag ............................................... 50 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 .................238
Display message (12-button mul-
tifunction steering wheel) ..............275
Function/informatio n.................... 208
Lane package ..................................... 205
Lap time (RACETIMER) ......................245
Lashing eyelets ................................. 307
Lighting see Lights
Lights
Activating/deactivating the exte-
rior lighting delayed switch-off 14
Index

Towing away
Fitting the towing ey e.................... 352
Removing the towing eye. ..............353
With both axles on the ground .......353
Tow-starting
Emergency engine starting ............354
Fitting the towing eye. ...................352
Important safety notes ..................351
Removing the towing eye. ..............353
Trailer coupling
see Towing atrailer
Trailer towing
7-pin connector ............................. 220
Blind Spot Assist ............................ 207
Cleaning the trailer tow hitch ......... 331
Coupling up atrailer ...................... 218
Decoupling atrailer ....................... 218
Driving tips .................................... 215
ESP ®
................................................ 77
Folding in the ball coupling ............218
Folding out the ball coupling ..........217
Important safety notes ..................215
Mounting dimensions ....................387
Parking Guidance ........................... 202
Parktroni c...................................... 198
Power supply ................................. 219
Shift range ..................................... 163
Trailer loads ................................... 388
Transmission
see Automatic transmission
see Manual transmission
Transporting the vehicle ..................353
Trim pieces (cleaning instructions) .332
Trip computer On-board computer (12-button
multifunctio nsteering wheel) ........231
On-board computer (4-button
multifunctio nsteering wheel) ........226
Trip meter
Displaying/resetting (4-button
multifunctio nsteering wheel) ........225
Displaying (12-button multifunc-
tion steering wheel) .......................231
Resetting (12-button multifunc-
tion steering wheel) .......................232
Trip odometer
see Trip meter Turn signal
Display message (12-button mul-
tifunctio nsteering wheel) ..............265
Display message (4-button multi-
function steering wheel) ................262
Turn signals
Switching on/off ........................... 120
Two-way radio
Frequencies ................................... 377
Installatio n..................................... 377
Transmission output (maximum) .... 377
Type identification plate
see Vehicle identification plate
Tyre pressure
Calling up (on-board computer) .....363
Display message (12-button mul-
tifunctio nsteering wheel) ..............281
Display message (4-button multi-
function steering wheel) ................280
Not reached (TIREFIT) ....................340
Pressure loss warning ....................362
Reached (TIREFIT) ..........................340
Recommended ............................... 361
Tyre pressure monitor
Function/notes ............................. 363
Restarting ...................................... 365
Warning lamp ................................. 300
Tyres
Checking ........................................ 358
Directio nofrotation ...................... 366
Display message (12-button mul-
tifunction steering wheel) ..............281
Display message (4-button multi-
function steering wheel) ................280
Grip ................................................ 177
Important safety notes ..................358
Replacing ....................................... 365
Service life ..................................... 359
Storing ........................................... 366
Tyr esize (data) .............................. 366
Tyr etread ...................................... 359
see Flat tyre Index
23

On-Board diagnostic interface
G
WARNING
If you connect equipment to the on-board
diagnostic interface, it can affect the opera-
tion of the vehicle systems. This can impair
the operating safety of your vehicle while driv-
ing. There is a risk of accident.
Do not connect any equipment to the on-
board diagnostic interface. G
WARNING
Loose equipment or equipment cables which
are connected to the on-board diagnostic
interface may infringe on the space around
the pedals. The equipment or the cables could
get between the pedals in the event of sudden
braking or acceleration. You may then no lon-
ger be able to brake, operate the clutch or
accelerate as intended. There is a risk of acci-
dent.
Do not attach any equipment or cables in the
driver footwell.
Connecting equipment to the on-board diag-
nostic interface can lead to emissions moni-
toring information being reset .This may lead
to the vehicle failing to meet the require-
ments at the next emissions control test or
main inspection.
If the engine is switched off and equipment
on the on-board diagnostic interface is used,
the starter battery may discharge.
The on-board diagnostic interface is intended
for the connection of diagnostic equipment at
a qualified specialist workshop. Qualified specialist workshop
Aq ualified specialist workshop has the nec-
essary specialist knowledge, tools and quali-
fications to correctl ycarry out the work
required on your vehicle .This is especially the
case for work relevant to safety.
Observe the information in the Service Book-
let. Always have the following work carried out at
a qualified specialist workshop:
R
work relevant to safety
R service and maintenance work
R repair work
R alterations, installation work and modifica-
tions
R work on electronic components
Mercedes-Ben zrecommends that you use a
Mercedes-Benz Service Centre. Vehicle registration
Mercedes-Benz may ask its Service Centres
to carry out technical inspections on certain
vehicles to improve their quality or safety.
If you did not purchase your vehicle from an
authorised specialist dealer and your vehicle
has never been inspected at a Mercedes-
BenzS ervice Centre, it is possible that your
vehicle is not registered in your name with
Mercedes-Benz. Mercedes-Benz can only
infor myou about vehicle checks if it has your
registration data.
It is advisable to register your vehicle with a
Mercedes-Benz Service Centre.
InformM ercedes-Benza s soon as possible
abouta ny change in address or vehicle own-
ership. Correc
tuse G
WARNING
Various warning stickers are affixed to your
vehicle. Their purpose is to draw your atten-
tion, and the attention of others, to various
dangers. Therefore, do not remove any warn-
ing stickers unless the sticker clearly states
that you may do so.
If you remove the warning stickers, you or
others could be injured by failing to recognise
certain dangers. 28
Introduction

G
WARNING
Modifications to or work performed incor-
rectly on the following parts can result in the
restraint systems not functioning as intended:
R the restraint system, consisting of seat
belts and their anchorage points, beltt en-
sioners, belt force limiters and airbags
R the wiring
R networked electronic systems
Airbags and belt tensioners could fail to
deploy or be triggered in an acciden tdespite
the deceleration force being sufficien tto trig-
ger the systems, or could be triggered unin-
tentionally. For this reason, never make any
modifications to the restraint systems.
Therefore, you must not tamper with elec-
tronic components or their software. SRS (Supplemental Restraint System)
Introduction SRS consists of:
R
the 6 SRS warning lamp
R airbags
R airbag control unit (with crash sensors)
R belt tensioners
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. G
WARNING
If SRS is malfunctioning, individual systems
may be activated unintentionally or may not
be triggered in the event of an accident with
a high rate of vehicle deceleration.
A malfunction has occurred if:
R the 6 SRS warning lamp does not light
up when the ignition is switched on.
R the engine is running and the 6SRS
warning lamp does not go out after a few
seconds.
R the engine is running and the 6SRS
warning lamp lights up again.
In this case, have SRS checked immediately
at a qualified specialist workshop. Mercedes-
Benz recommends that you use a Mercedes-
Benz Service Centre for this purpose.
In particular, work relevant to safety or on
safety-related systems must be carried out at
a qualified specialist workshop.
Triggering of belt tensioners, belt force
limiters and airbags During the first stage of a collision, the airbag
control unit evaluates important physical
data relating to vehicle deceleration or accel-
eration, such as:
R
duration
R direction
R magnitude
Based on the evaluation of this data, the air-
bag control unit pre-emptively triggers the
belt tensioners in the first stage.
i The front belt tensioners can only be trig-
gered if the seat belt tongues on the front
seats are correctly engaged in the seat belt
buckles.
If there is an even higher rate of vehicle decel-
eration or acceleration in a longitudinal direc-
tion, the front airbags are also deployed.
Your vehicle has adaptive, two-stage front air-
bags. The airbag control unit evaluates vehi-
cle deceleration or acceleration in the event Occupant safety
47Safety Z

As a result, PRE-SAFE
®
Brake may not give
warnings or intervene in critical situations.
There is a ris kofanaccident. Always pay
careful attention to the traffi csituation and be
ready to brake.
In order to maintain the appropriate distance
to the vehicle in front and thus prevent a col-
lision, you must apply the brakes yourself.
X To activate/deactivate: activate or deac-
tivate PRE-SAFE ®
Brake in the on-board
computer (Y page 237).
The Ä symbol appears in the multifunc-
tion display as long as the HOL Dfunction
is not activated (Y page 193).
On vehicles with parking guidance, the
Ä symbol is displayed when Pis
engaged or you are driving faste rthan
35 km/h.
Vehicles with COMAND and navigation sys-
tem: the radar sensor system is switched off
automatically in the vicinity of radio telescope
facilities (Y page 389).
Vehicles without COMAND and a navigation
system and vehicles for Australia: the radar
sensor system and on-board computer must
be switched off in the vicinity of radio tele-
scope facilities (Y page 242).
For PRE-SAFE ®
Brake to assist you when driv-
ing, the radar sensor system must be
switched on (Y page 242) and be opera-
tional.
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensors checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle. Anti-theft systems
Immobiliser
The immobiliser prevents your vehicle from
being started without the correct key. X
To activate with the key: remove the key
from the ignition lock.
X To activate with KEYLESS-GO: switch the
ignition off and open the driver's door.
X To deactivate: switch on the ignition.
i The immobiliser is always deactivated
when you start the engine. ATA (Anti-Theft Alarm system)
Av isual and audible alarm is triggered if the
alarm system is primed and you open:
R a door
R the vehicle with the emergency key ele-
ment
R the boot lid/tailgate
R the bonnet
The alarm is not switched off, even if you
close the open door that has triggered it, for
example. X
To prime: lock the vehicle with the key or
KEYLESS-GO.
Indicator lamp :flashes .The alarm sys-
tem is primed after approximately 15 sec-
onds.
X To deactivate: unlock the vehicle with the
key or KEYLESS-GO. 80
Anti-theft systemsSafety

If you activate the acoustic locking confirma-
tion function, you will hear the following,
depending on the date of production of the
vehicle:
R an acoustic signal when locking
or
R one acoustic signal when unlocking and
three when locking.
The audible signal can be activated and deac-
tivated using the on-board computer
(Y page 242).
X To unlockc entrally:press the%but-
ton.
If you do not open th evehicle within approx-
imately 40 seconds of unlocking:
R the vehicle is locked again.
R the anti-thef tsystem is primed again.
X To lock centrally: press the&button. KEYLESS-GO
You can start, loc korunlock the vehicle using
KEYLESS-GO .To do this, you only need carry
the key with you. When you touch the surface
of the sensors on the vehicle's outside door
handles, KEYLESS-GO establishes a radio
connection between the vehicle and the key.
When the engine is started and whilst you are
driving, KEYLESS-GO also checks whether a
valid key is in the vehicle by periodically
establishing radio contact.
When locking or unlockin gwith KEYLESS-GO,
the distance between the key and the door
handle you wish to lock or unloc kmust not
be greater than 1 m. X
To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :.
X Convenience closing feature: touch
recessed sensor surface ;for an exten-
ded period (Y page 98).
If you pull on the handle of the boot lid/tail-
gate, only the boot/luggage compartmen tof
the vehicle is unlocked. Changing the settings of the locking
system
You can change the setting of the locking
syste mins uch a way that only the driver's
door and the fuel filler flap are unlocked. This
is useful if you frequently travel on your own.
X To change the setting: press and hold
down the %and& buttons simulta-
neously for approximately six seconds until
the battery check lamp (Y page 87)
flashes twice.
i If the setting of the locking system is
changed within the signal range of the vehi-
cle, pressing the &or% buttonlocks
or unlocks the vehicle.
The key now functions as follows:
X To unlock the driver's door: press the
% button once.
X To unlock centrally: press the%but-
ton twice.
X To lock centrally: press the&button. Key
85Opening and closing Z