air filter MERCEDES-BENZ C-CLASS SALOON 2014 Owners Manual

1, 2, 3 ...
4ETS see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 235
4MATIC off-road system ...................235
12 V socket
see Sockets
230 V power socket .......................... 382
360° camera
Cleaning ......................................... 401
Function/notes ............................ .249 A
ABS (Anti-lock Braking System) Display message ............................ 315
Function/notes ................................ 74
Important safety notes .................... 75
Warning lamp ................................. 355
Accident
Automatic measures after an acci-
dent ................................................. 63
Activating/deactivating air-recir-
culation mode ................................... .165
Activating/deactivating cooling
with air dehumidification ................. 157
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 309
Display message ............................ 339
Function/notes ............................ .263
Towing a trailer .............................. 266
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 309
Display message ............................ 338
Function/notes ............................ .266
Towing a trailer .............................. 269
Active light function ......................... 138
Active Light System
Display message ............................ 331
Active Parking Assist
Detecting parking spaces .............. 240
Display message ............................ 339
Exiting a parking space .................. 243 Function/notes ............................
.239
Important safety notes .................. 239
Parking .......................................... 241
Towing a trailer .............................. 239
ADAPTIVE BRAKE ................................. 82
Adaptive Brake Assist
Function/notes ................................ 79
Adaptive brake lights .......................... 80
Adaptive Damping System (ADS) ..... 235
Adaptive Highbeam Assist PLUS
Display messages .......................... 332
Function/notes ............................ .139
Switching on/off ........................... 140
AdBlue ®
Additive ......................................... 473
Display message ............................ 336
Displaying level and range ............. 307
Filling capacity ............................... 473
Important safety notes .................. 472
Low outside temperatures ............. 473
Purity ............................................. 473
Topping up ..................................... 204
Additional speedometer ................... 312
Additives (engine oil) ........................ 474
Adjusting the headlamp range ......... 136
AGILITY SELECT switch
Automatic transmission ................. 197
Climate control (THERMATIC) ....... .153
Climate control
(THERMOTRONIC) .......................... 156
Hybrid operatio n ............................ 277
Manual transmission ..................... .191
Air filter (white display message) .... 336
Air pressure
see Tyre pressure
Air vents
Important safety notes .................. 177
Rear ............................................... 178
Setting .......................................... .177
Setting the centre air vents ........... 178
Setting the side air vents .............. .178
Air-conditioning system
see Climate control
Airbag
Introduction ..................................... 51
PASSENGER AIR BAG indicator
lamps ............................................... 46 4
Index

First-aid kit
........................................ .406
Fitting a wheel
Fitting a wheel ............................... 442
Lowering the vehicle ..................... .443
Preparing the vehicle ..................... 438
Raising the vehicle ......................... 439
Removing a wheel .......................... 442
Securing the vehicle against roll-
ing away ........................................ 439
Flat tyre
Changing a wheel/fitting the
spare wheel ................................... 437
MOExtended tyres ......................... 408
Preparing the vehicle ..................... 408
TIREFIT kit ...................................... 409
see Emergency spare wheel
Floormat ............................................. 387
Foglamps (extended range) .............. 139
Fording
On flooded roads ........................... 215
Frequencies
Mobile phone ................................. 466
Two-way radio ................................ 466
Front-passenger front airbag deac-
tivation
Display message ............................ 328
Front-passenger front airbag deac-
tivation system
Operation ......................................... 54
Problems ......................................... 59
System self-test ............................... 57
Fuel
Additives ........................................ 471
Consumption information .............. 472
Consumption statistics .................. 299
Displaying the current consump-
tion ................................................ 298
Displaying the range ..................... .298
Driving tips ................................... .211
E10 ................................................ 470
Fuel gauge ....................................... 34
Grade (petrol) ................................ 470
Important safety notes .................. 469
Low outside temperatures ............. 472
Problem (malfunction) ................... 203
Quality (diesel )............................... 471
Refuelling ....................................... 200
Tank content/reserve fue l............. 470 Fuel consumption (Audio 20)
........... 276
Fuel consumption (COMAND
Online) ................................................ 276
Fuel filler flap
Opening ......................................... 202
Fuel filter (white display message) .. 336
Fuel level
Calling up the range (on-board
computer) ...................................... 298
Gaug e.............................................. 34
Fuel tank
Capacity ........................................ 470
Problem (malfunction) ................... 203
Fuses
Allocation chart ............................. 426
Before changing ............................. 425
Dashboard fuse box ....................... 425
Fuse box in the boot ...................... 426
Fuse box in the engine compart-
ment .............................................. 426
Fuse box in the front-passenger
footwell .......................................... 425
Important safety notes .................. 424 G
Generated electrical energy (Audio 20) ...................................................... 276
Generated electrical energy
(COMAND Online) .............................. 276
Genuine Mercedes-Benz parts ........... 24
Glove compartment .......................... 369 H
Handbrake see Parking brake
HANDS-FREE ACCESS ....................... 103
Hazard warning lamps ...................... 137
Head restraints
Adjusting ....................................... 121
Adjusting (electrically) ................... 122
Adjusting (manually) ...................... 122
Adjusting (rear) .............................. 122
Fitting/removing (rear) .................. 122
Head-up display
Adjusting the brightness ................ 310
Function/note s............................. 295 12
Index

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 27). Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could other-
wise mist up.
To prevent the windows from misting up:
R switch off climate control only briefly
R switch on air-recirculation mode only
briefly
R switch on the cooling with air dehumidifi-
cation function
R switch on the "demist windscreen" function
briefly, if required
Climate control regulates the temperature
and air humidity in the vehicle interior. The
interior filter cleans the air, thus improving
the interior climate.
For vehicles without hybrid drive, the "Cooling with air dehumidification" function is availa-
ble when the engine is running. For hybrid
vehicles, the cooling with air dehumidification function is also available via the electric
refrigerant compressor when the engine is
not running. Optimum climate control is only
achieved with the side windows and roof
closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (Y page 166). i
Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 107).
This will speed up the cooling process and
the desired interior temperature will be
reached more quickly.
i The integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. It also reduces gaseous pol-
lutants and odours. 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 this 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 blower may be acti-
vated automatically 60 minutes after the
key has been removed depending on vari-
ous factors, e.g. the outside temperature.
The vehicle is then ventilated for
30 minutes to dry the automatic climate
control. 150
Overview of climate control systemsClimate control

vapours. Keep fuels out of the reach of chil-
dren.
If you or others come into contact with fuel,
observe the following:
R Wash the fuel off any affected areas of skin
with water and soap immediately.
R If you get fuel in your eyes, rinse them thor-
oughly with clean water immediately. Seek
immediate medical attention.
R If fuel is swallowed, seek immediate medi-
cal attention. Do not induce vomiting.
R Change any clothing that has come into
contact with fuel immediately. G
WARNING
Electrostatic charge can cause sparks and
thereby ignite fuel vapours. There is a risk of
fire and explosion.
Always touch the vehicle body before opening the fuel filler flap or touching the fuel pump
nozzle. This discharges any electrostatic
charge that may have built up.
Do not get into the vehicle again during the
refuelling process. Otherwise, electrostatic
charge could build up again. G
WARNING
Vehicles with a diesel engine:
If you mix diesel fuel with petrol, the flash
point of this fuel mixture is lower than that of pure diesel fuel. When the engine is running,
components in the exhaust system may over-
heat unnoticed. There is a risk of fire.
Never refuel with petrol. Never add petrol to
diesel fuel.
! Do not use diesel to refuel vehicles with a
petrol engine. Do not switch on the ignition if you accidentally refuel with the wrong
fuel. Otherwise, the fuel will enter the fuel
system. Even small amounts of the wrong
fuel can result in damage to the fuel system
and the engine. Notify a qualified specialist
workshop and have the fuel tank and fuel
lines drained completely. !
Do not use petrol to refuel vehicles with a
diesel engine. Do not switch on the ignition if you accidentally refuel with the wrong
fuel. Otherwise, fuel can enter the fuel sys-tem. Even small amounts of the wrong fuel
could result in damage to the fuel system
and the engine. The repair costs are high.
Notify a qualified specialist workshop and
have the fuel tank and fuel lines drained
completely.
! Overfilling the fuel tank could damage the
fuel system.
! Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
! Use a filter when adding fuel from a fuel
can. The fuel lines and/or the diesel injec-
tion system could otherwise be blocked by
particles from the fuel can.
If you overfill the fuel tank, some fuel may
spray out when you remove the fuel pump
nozzle.
Further information on fuel and fuel quality
(Y page 468). Refuelling
General notes Observe the important safety notes
(Y
page 200).
If you unlock/lock the vehicle from the out-
side, the fuel filler flap also unlocks/locks.
The position of the 8fuel filler cap is dis-
played in the instrument cluster. The arrow
next to the filling pump indicates the side of
the vehicle. Refuelling
201Driving and parking Z

in front, for vehicle speed, for braking in good
time, and for staying in lane.
Do not use DISTRONIC PLUS:
R in road and traffic conditions which do not
allow you to maintain a constant speed, e.g.
in heavy traffic or on winding roads
R on smooth or slippery roads. Braking or
accelerating can cause the drive wheels to lose traction and the vehicle could then
skid
R when there is poor visibility, e.g. due to fog,
heavy rain or snow
DISTRONIC PLUS may not detect narrow
vehicles driving in front, e.g. motorcycles, or
vehicles driving on a different line.
In particular, the detection of obstacles can
be impaired in the case of:
R dirt on the sensors or obscured sensors
R snow or heavy rain
R interference by other radar sources
R the possibility of strong radar reflections,
for example, in multi-storey car parks
If DISTRONIC PLUS no longer detects a vehi- cle in front, it may unexpectedly accelerate tothe speed stored.
This speed can:
R be too high for a filter lane or a slip road
R be so high in the right lane that you pass
vehicles driving on the left (left-hand drive
countries)
R be so high in the left lane that you pass
vehicles driving on the right (right-hand
drive countries)
If there is a change of drivers, advise the new driver of the speed stored. Cruise control lever :
To activate or increase speed
; To set the specified minimum distance
= LIM indicator lamp
? To activate at the current speed/last
stored speed
A To activate or reduce speed
B To switch between DISTRONIC PLUS and
variable SPEEDTRONIC
C To deactivate DISTRONIC PLUS
You can operate DISTRONIC PLUS and varia- ble SPEEDTRONIC with the cruise control
lever.
LIM indicator lamp =on the cruise control
lever indicates which function you have selec- ted:
R LIM indicator lamp =
= off: DISTRONIC
PLUS is selected.
R LIM indicator lamp = =on: variable
SPEEDTRONIC is selected.
Selecting DISTRONIC PLUS X
Check whether LIM indicator lamp :is off. Driving systems
223Driving and parking Z

Speed limits and overtaking restrictions are
not always correctly displayed. Traffic signs
always have priority over the Traffic Sign
Assist display.
The visibility of the head-up display is influ-
enced by the following conditions:
R the driver's seat position
R the positioning of the display image
R the general light conditions
R sunglasses with polarisation filters
R wet road surfaces
R blocking of sunlight by objects on the dis-
play cover
In the event of extreme sunlight, sections of
the display may fade. This can be reversed by
switching the head-up display off and on
again.
i Vehicles with the head-up display are
equipped with a special windscreen.
Should repairs be necessary, have the
windscreen replaced at a qualified special- ist workshop.
Displays and operation Switching the head-up display on/off
X
Press button :.
When the head-up display is switched on,
the display appears in the driver's field of
vision. 296
Displays and operationOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions ¸
Replace Replace
air
aircleaner
cleaner Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X Visit a qualified specialist workshop. !
Clean Clean
the
thefuel
fuel fil‐
fil‐
ter
ter Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X Visit a qualified specialist workshop. Refill AdBlue See Refill AdBlue See
Owner’s Manual Owner’s Manual
The AdBlue
®
level has fallen below the reserve range. A warning
tone also sounds.
X Refill AdBlue ®
as soon as possible (Y page 204).Refill AdBlue No
Refill AdBlue No
start in ... mi start in ... mi
The AdBlue
®
level is only sufficient for the indicated distance. A
warning tone also sounds.
X Refill AdBlue ®
immediately (Y page 204).
i If you drive the vehicle faster than 15 km/h the
Refill
Refill
AdBlue
AdBlue No
Nostart
start in
in...
... mi
mimessage goes out after approx-
imately one minute. Refill
Refill
AdBlue
AdBlueEng.
Eng.
start not possible
start not possible The AdBlue
®
tank is empty. A warning tone also sounds. You can
no longer start the engine.
X Add at least 3.5 l of AdBlue ®
(Y page 204).
X Turn the ignition on for approximately one minute.
The system requires approximately one minute after refilling to
detect the change in the AdBlue ®
level.
X Start the engine. Check AdBlue See
Check AdBlue See
Owner’s Manual Owner’s Manual
The AdBlue
®
system is malfunctioning. A warning tone also
sounds.
X Visit a qualified specialist workshop. Eng.
Eng.
start
start not
notpos‐
pos‐
sible
sible The AdBlue
®
system is malfunctioning. A warning tone also
sounds. You can no longer start the engine.
X Consult a qualified specialist workshop immediately. 336
Display
messagesOn-board computer and displays

Have service work carried out as described
in the Service Booklet. This may otherwise
lead to increased wear and damage to the
major assemblies or the vehicle.
A qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre, will reset the ASSYST PLUS service interval display after
the service work has been carried out. You
can also obtain further information on main-
tenance work, for example.
Special service requirements The prescribed service interval is based on
normal operation of the vehicle. Service work
will need to be performed more often if the
vehicle is operated under arduous conditions or increased loads, for example:
R regular city driving with frequent intermedi-
ate stops
R if the vehicle is primarily used for travelling
short distances
R for frequent operation in mountainous ter-
rain or on poor road surfaces
R if the engine is often left idling for long peri-
ods
In these or similar operating conditions, have
the air filter, engine oil and oil filter, for exam-
ple, changed more frequently. The tyres must be checked more frequently if the vehicle is
operated under increased loads. Further
information can be obtained at a qualified
specialist workshop, e.g. a Mercedes-Benz
Service Centre.
Driving abroad An extensive Mercedes-Benz Service network
is also available in other countries. You can
obtain further information from any
Mercedes-Benz Service Centre. Care
General notes
H
Environmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man- ner.
! For cleaning your vehicle, do not use any
of the following:
R dry, rough or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces or protective
films with hard objects, e.g. a ring or ice
scraper. You could otherwise scratch or
damage the surfaces and protective film.
! Do not park up the vehicle for an extended
period straight after cleaning it, particularly after having cleaned the wheels with wheel cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for a few minutes after clean-
ing. Braking heats the brake discs and the
brake pads/linings, thus drying them. The
vehicle can then be parked up.
Regular care of your vehicle is a condition for
retaining the quality in the long term.
Use care products and cleaning agents rec-
ommended and approved by Mercedes-Benz. Washing the vehicle and cleaning the
paintwork
Automatic car wash G
WARNING
Braking efficiency is reduced after the vehicle has been washed. There is a risk of an acci-
dent. 396
CareMaintenance and care

octane rating of 91 RON/82 MON. This may
reduce engine performance and increase fuel consumption. Avoid driving at full throttle andsudden acceleration. Never refuel using fuel
with a lower RON/MON.
i In some countries, the available petrol
may not be sufficiently low in sulphur. This
fuel can temporarily produce unpleasant
odours, especially on short journeys. As
soon as sulphur-free fuel (sulphur content
<1 0 ppm) is used for refuelling, the odours
are reduced.
Information on refuelling (Y page 201).
C 200, C 250
! Only refuel using unleaded, sulphur-free
unleaded petrol with at least 95 RON/
85 MON that conforms to European stand- ard EN 228 or an equivalent specification.
You could otherwise impair engine output
or damage the emission control system.
i In some countries, the available petrol
may not be sufficiently low in sulphur. This
fuel can temporarily produce unpleasant
odours, especially on short journeys. As
soon as sulphur-free fuel (sulphur content
<1 0 ppm) is used for refuelling, the odours
are reduced.
Additives ! Operating the engine with fuel additives
added later can lead to engine failure. Do
not mix fuel additives with fuel. This does
not include additives for the removal and
prevention of residue build-up. Petrol must only be mixed with additives recommended
by Mercedes-Benz. Observe the instruc-
tions for use in the product description.
More information about recommended
additives can be obtained from any
Mercedes-Benz Service Centre.
Mercedes-Benz recommends that you use
fuel brands that have additives.
The quality of the fuel available in some coun- tries may not be sufficient. Residue could
build up in the injection system as a result. In this case, in consultation with a Mercedes-
Benz Service Centre, the petrol may be mixed
with the cleaning additive recommended by
Mercedes-Benz. Always observe the notes
and mixing ratios specified on the container.
Diesel Fuel grade
G
WARNING
If you mix diesel fuel with petrol, the flash
point of this fuel mixture is lower than that of pure diesel fuel. When the engine is running,
components in the exhaust system may over-
heat unnoticed. There is a risk of fire.
Never refuel with petrol. Never add petrol to
diesel fuel.
! When refuelling, only use diesel fuel that
conforms to the European standard EN 590
or is of equivalent quality. Fuel that does
not conform to EN 590 can lead to
increased wear as well as damage to the
engine and exhaust system.
! Do not use the following:
R marine diesel
R heating oil
R bio-diesel
R vegetable oil
R petrol
R paraffin
R kerosene
Do not mix such fuels with diesel fuel and
do not use any special additives. Other-
wise, engine damage may occur.
! Vehicles with diesel particle filters:
in
countries outside the EU, only use low sul-
phur Euro diesel with a sulphur content of
under 50 ppm. Otherwise, the emission
control system could be damaged.
! Vehicles without a diesel particle fil-
ter: in countries where only diesel fuel with
a high sulphur content is available, you will need to carry out your vehicle's oil change Service products and capacities
471Technical data Z

Petrol engines:
in certain countries, differ-
ent engine oils can be used, provided that the
maintenance intervals are reduced. For more
information, please contact a qualified spe-
cialist workshop. Petrol engines MB Approval
All models
229.5
Diesel engines with a
diesel particle filter MB Approval
C 180 BlueTEC
C 200 BlueTEC
226.51,
229.31,
229.51, 229.52 All other models
228.51,
229.31,
229.51, 229.52 Diesel engines without
a diesel particle filter MB Approval
All models
228.3, 228.5,
228.51, 229.3,
229.31, 229.5, 229.51 i
If the engine oils listed in the table are not
available, you may add the following engine
oils until the next oil change:
R vehicles with a petrol engine: MB
Approval 229.1, 229.3 or ACEA A3
R vehicles with a diesel engine: MB
Approval 229.1, 229.3, 229.5 or ACEA
C3
This must only be added once and the
amount must not be greater than 1.0 l.
Ca pacities The following values refer to an oil change,
including the oil filter. Petrol engines Replacement
amount All models
7.0 l
Diesel engines Replacement
amount C 180 BlueTEC
C 200 BlueTEC
6.5 l
All other models
6.0 l
Additives
!
Do not use any additives with the engine
oil. This could damage the engine.
Engine oil viscosity Viscosity describes the flow characteristics
of a fluid. If an engine oil has a high viscosity
rating, it flows slowly; the lower the viscosity,
the faster it flows.
Engine oil selection is based on the respective outside temperatures and in accordance with
the SAE classification (viscosity). The table
shows you which SAE classifications are to be
used. The low-temperature properties of
engine oils can be significantly impaired dur-
ing operation due to, for example, ageing or
soot and fuel accretion. It is therefore
strongly recommended to observe regular oil changes using an approved engine oil with the
appropriate SAE classification. 474
Service products and capacitiesTechnical data