2011 MERCEDES-BENZ C-CLASS SALOON maintenance

Index
....................................................... 4Introduction
......................................... 26 At
ag lance ........................................... 31 Safety
................................................... 45 Opening and closing
...........................83 Seats, steering wheel and mirrors
..103 Lights and windscreen wipers
.........117 Climate control
................................. 133 Driving and parking
..........................151 On-board computer and displays
....221 Stowing and features
.......................301 Maintenance and care
......................321 Breakdown assistance
.....................333 Wheels and tyres
.............................. 357 Technical data
................................... 375 Contents
3

(12-button multifunction steering
wheel)
............................................ 241
Activating/deactivating the Intel-
ligent Ligh tSystem ........................ 240
Activating/deactivating the inte-
rior lighting delayed switch-off
(12-button multifunction steering
wheel) ............................................ 241
Active light function .......................121
Automatic headlamp mode ............119
Cornering light function .................121
Dipped-bea mheadlamps ............... 119
Driving abroad ............................... 118
Foglamps ....................................... 119
Foglamps (extended range) ...........122
Hazard warning lamps ...................121
Headlamp flasher ........................... 121
Headlamp range ............................ 120
Ligh tswitc h................................... 118
Main-beam headlamps ................... 120
Motorway mode ............................. 122
Parking lamps ................................ 118
Rea rfoglamp ................................. 119
Switching Adaptive Highbeam
Assist on/off ................................. 240
Switching the daytime driving
lights on/off (12-button multi-
function steering wheel) ................239
Switching the daytime driving
lights on/off (4-button multifunc-
tion steering wheel) .......................226
Switching the daytime driving
lights on/off (switch) .....................119
Switching the surround lighting
on/off (12-button multifunction
steering wheel) .............................. 241
Turn signals ................................... 120
see Changing bulbs
see Interior lighting
Light sensor
Display message (12-button mul-
tifunctio nsteering wheel) ..............267
Display message (4-button multi-
function steering wheel) ................264
LIM indicator lamp
Cruise control ................................ 178
DISTRONI CPLUS ........................... 184
Variabl eSPEEDTRONIC .................181Limiting the speed
see SPEEDTRONIC
Loading guidelines ............................302
Locking see Centra llocking
Locking (doors)
Automatic ........................................ 90
Emergency locking ........................... 91
From inside (central locking but-
ton) .................................................. 90
Locking centrally
see Centra llocking
Locking verification signal (on-
board computer) ............................... 242
Luggage compartment floor opening/closing ............................ 312
stowage well, unde r....................... 312
Luggage cover ................................... 308
Luggage holder (EASY-PACK load-
securing kit) ....................................... 311
Luggage net ....................................... 304
Lumbar support Adjusting ....................................... 109
Adjusting the 4-way lumba rsup-
por t................................................ 109
Luxu ry head restraint .......................107
Luxury multifunction steering
wheel
see 12-button multifunction
steering wheel M
M+S tyres ........................................... 360
Main beam Display message (4-button multi-
function steering wheel) ................262
Main-beam headlamps
Changing bulbs .............................. 127
Display message (12-button mul-
tifunctio nsteering wheel) ..............266
Switching Adaptive Highbeam
Assist on/off ................................. 122
Switching on/off ........................... 120
Maintenance
see ASSYST PLUS service interval
display Index
15

Protection of the environment
Notes
H
Environmental note
Daimler's declared policy is one of integrated
environmental protection.
The objectives are for the natural resources
which form the basis of our existence on this
planet to be used sparingly and in a manner
which takes the requirements of both nature
and humanity into account.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tyre wear depend on
the following factors:
R operating conditions of your vehicle
R your personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
R avoid short trips as these increase fuel con-
sumption.
R make sure that the tyre pressures are
always correct.
R do not carry any unnecessary weight.
R keep an eye on the vehicle's fuel consump-
tion.
R remove roof racks once you no longer need
them.
R a regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
R always have maintenance work carried out
at a qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre.
Personal driving style:
R do not depress the accelerator pedal when
starting the engine.
R do not warm up the engine with the vehicle
stationary. R
drive carefully and maintain a safe distance
from the vehicle in front.
R avoid frequent, sudden acceleration.
R change gear in good time and use each gear
only up to Ôof its maximum engine speed.
R switch off the engine in stationary traffic. Returning end-of-life vehicles
Mercedes-Benz will take back your
Mercedes-Benz to dispose of it in an environ-
mentally responsible manner, in accordance
with the European Union (EU) End of Life
Vehicles Directive.
The End of Life Vehicles Directive applies to
vehicles with a gross vehicle weight of up to
3.5 t, in accordance with national regulations.
For several years, Mercedes-Benz has been
meeting all the legal requirements for a
design which allows for recycling and reuse.
There is a network of return points and dis-
assembly plants which can recycle your vehi-
cle in an environmentally responsible man-
ner. The options for recycling vehicles and
parts are constantly being developed and
improved. This means that your Mercedes-
Benz will also continue to meet even the
increased recycling quotas in the future in
good time. You can obtain further information
from your national Mercedes-Benz homepage
or your national hotline number. Vehicle equipment
This Owner's Manual describes all models
and all standard and optional equipment of
your vehicle available at the time of publica-
tion of the Owner's Manual. Country-specific
differences are possible. Please note that
your vehicle may not be equipped with all fea-
tures described. This also applies to safety-
relevant systems and functions. The equip-
ment in your vehicle may therefore differ from
that shown in the descriptions and illustra-
tions. All the systems found in your vehicle 26
Introduction

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

Useful information
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviations are possible. Please
note that your vehicle may not be equipped
with all features described. This also
applies to safety-relevan tsystems and
functions.
i Please read the information on qualified
specialist workshops (Y page 28).Important safety notes
You will find an illustration of the instrument
cluster in the "At a glance" section
(Y page 34). G
WARNING
Only use the on-board computer when road
and traffic conditions permit .You would oth-
erwise be distracted and unable to concen-
trate properly on driving, and could cause an
accident. G
WARNING
No messages will be displayed if either the
instrument cluster or the multifunction dis-
play is inoperative.
As a result, you will not be able to see infor-
mation about your driving conditions, such as
speed, outside temperature, warning and indi-
cator lamps, display messages or system fail-
ures. Driving characteristics may be impaired.
Adjust your driving style and vehicle speed
accordingly.
Contact a qualified specialist workshop
immediately. G
WARNING
The on-board computer only records and dis-
plays malfunctions and warnings from certain
systems. For this reason, you should always make sure that your vehicle is safe to use. You
could otherwise cause an accident by driving
an unsafe vehicle.
G
WARNING
The operating safety of your vehicle could be
impaired if maintenance work is carried out
incorrectly. This could cause you to lose con-
trol of your vehicle and cause an accident.
Moreover, the safety systems may no longer
be able to protect you or others as they are
designed to do.
Always have service work carried out at a
qualified specialist workshop. Displays and operation (4-button mul-
tifunction steering wheel)
Coolant temperature gauge
The coolant temperature gauge is in the
instrument cluster on the left-hand side.
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 120 †.
The coolant temperature may rise to the top
end of the scale at high outside temperatures
and on long uphill stretches. Rev counter
The red band in the rev counter indicates the
engine's overrevving range.
! Do not drive in the overrevving range.
Doing so will damage the engine.
The fuel supply is interrupted to protec tthe
engine when the red band is reached. Outside temperature display
The outside temperature display is in the
instrument cluster (Y page 34).222
Displays and operation (4-button multifunction steering wheel)On-board computer and displays

Useful information
............................322
Engine compartment ........................322
Maintenance ...................................... 326
Care .................................................... 327 321Maintenance and care

Useful information
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviations are possible. Please
note that your vehicle may not be equipped
with all features described. This also
applies to safety-relevan tsystems and
functions.
i Please read the information on qualified
specialist workshops (Y page 28).Engine compartment
Bonnet
Opening the bonnet G
WARNING
Do no tpull the release leve rwhile the vehicle
is in motion. If you do so, the bonnet may open
up and block your view. G
WARNING
There is a risk of injury if the bonnet is open,
even if the engine is not running.
Some engine components can become very
hot.
To avoid the risk of burns, only touch those
components described in the Owner's Manual
and observe the relevant safety notes. G
WARNING
The radiator fan between the radiator and the
engine can start automatically, even if the key
has been removed from the ignition lock. For
this reason, you must not reach into the fan
rotation area. You could otherwise be injured. Vehicles with
apetrol engine: The elec-
tronic ignitio nsystem uses high voltage. For
this reason, you mus tnever touch ignition
system components (ignition coil, ignition
cables, spark plug connectors or test socket)
while:
R the engine is running
R the engine is being started
R the ignition is switched on and the engine
is being cranked by hand
You could otherwise suffer an electric shock
and be seriously or even fatally injured.
Vehicles with adiesel engine: The elec-
tronic injection control uses high voltage. For
this reason, you must never touch injection
system components while:
R the engine is running
R the engine is being started
R the ignition is switched on
You could otherwise suffer an electric shock
and be seriously or even fatally injured.
X Make sure that the windscreen wipers are
switched off. G
WARNING
The windscreen wipers and wiper linkage
could be set in motion.
When the bonnet is open, you or others could
be injured by the wiper linkage.
Make sure that the windscreen wipers are
switched off. Remove the key or make sure
that no ignition position has been selected
with KEYLESS-GO. All indicator lamps must be
off in the instrument panel. 322
Engine compartmentMaintenance and care

X
Pull release lever :on the bonnet.
The bonnet is released.
! Make sure that the windscreen wipers are
not folded away from the windscreen .Oth-
erwise, you could damage the windscreen
wipers or the bonnet. X
Reach into the gap, pull bonnet catch han-
dle ;up and lift the bonnet.
If you lift the bonnet by approximately
40 cm, the bonnet is opened and held open
automatically by the gas-filled strut.
Closing the bonnet G
WARNING
Make sure tha tnobody can become trapped
as you close the bonnet. X
Lower the bonnet and let it fall from a
height of approximately 20 cm.
X Check that the bonnet has engaged prop-
erly.
If the bonnet can be raised slightly, it is not
properly engaged. Open it again and close
it with a little more force. Radiator
i Vehicles with diesel engine: do not
cover the radiator. Do not use thermal
mats, insect protection covers or anything
similar. Doing so can cause the Onboard
Diagnostics System to display inaccurate
values. Some of these values are legally
required and must be correct. Engine oil
Notes on the oil level Depending on driving style, the vehicle con-
sumes a maximum of 0.8 l oil per 1000 km.
The oil consumption may be higher than this
when the vehicle is new or if you frequently
drive at high engine speeds.
Checking the oil level using the oil dip-
stick
Example: vehicles with a petrol engine Engine compartment
323Maintenance and care Z