adblue 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

Automatic transmission emer-
gency running mode
.........................200
Auxiliary heating/ventilation
Important safety notes .................. 172
Problem (display message) ............ 177
Remote control .............................. 173
Setting the departure time ............. 175
Switching on/off (on the centre
console) ......................................... 173
Axle load, permissible (trailer tow-
ing) ...................................................... 480 B
Bag hook ............................................ 374
Ball coupling
Folding in ....................................... 286
Folding out ..................................... 285
BAS (Brake Assist System) ................. 75
BAS PLUS with Cross-Traffic Assist (Brake Assist PLUS with Cross-
Traffic Assist)
Function/notes ................................ 75
Important safety notes .................... 76
Battery (high-voltage)
see High-voltage battery
Battery (key)
Checking .......................................... 94
Important safety notes .................... 93
Replacing ......................................... 94
Battery (vehicle)
Charging ........................................ 416
Display message ............................ 334
Important safety notes .................. 412
Jump starting ................................. 418
Belt
see Seat belts
Belt tensioner
Activation ......................................... 60
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 309
Display message ............................ 339
Notes/function .............................. 259
Trailer towing ................................. 261
see Active Blind Spot Assist
BlueTEC (AdBlue ®
) ............................ .472 BlueTEC
®
Topping up AdBlue ®
....................... 204
Bonnet
Active bonnet (pedestrian protec-tion) ............................................... 390
Closing .......................................... .392
Display message ............................ 347
Important safety notes .................. 390
Opening ......................................... 391
Boot
Emergency release ........................ 105
Important safety notes .................. 101
Locking separately ......................... 105
Opening/closing (automatically
from inside) ................................... 104
Opening/closing (automatically
from outside) ................................. 102
Opening/closing (from the out-
side, HANDS-FREE ACCESS) .......... 103
Opening/closing (manually from
outside) ......................................... 102
Boot lid
Display message ............................ 347
Obstacle recognition ..................... .101
Opening dimensions ..................... .476
Opening/closing ............................ 101
Boot load (maximum) ........................ 476
Box (boot) .......................................... .374
Brake
EBD ................................................. .82
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 322
Notes ............................................. 475
Brake force distribution, elec-
tronic
see EBD (electronic brake force
distribution)
Brake lamps
Adaptive ........................................... 80
Display message ............................ 330
Brake pedal
Pedal resistance/pedal travel .......... 44
Brakes
ABS .................................................. 74
Adaptive Brake Assist ...................... 79 6
Index

Adjusting the height ......................... 49
Cleaning ......................................... 404
Display message ............................ 324
Fastening ......................................... 49
Important safety guidelines ............. 47
Introduction ....................................
.47
Rear seat belt status indicato r .........50
Releasin g......................................... 49
Warning lamp ................................. 351
Warning lamp (function) ................... 50
Seats
Adjusting (electrically) ................... 121
Adjusting (manually and electri-
cally) .............................................. 120
Adjusting the 4-way lumbar sup-
port ................................................ 123
Adjusting the head restraint .......... 121
Cleaning the cover ......................... 403
Correct driver's seat position ........ 118
Important safety notes .................. 119
Seat heating .................................. 123
Seat heating problem .................... 124
Seat ventilation .............................. 124
Seat ventilation problem ................ 125
Storing settings (memory func-
tion) ............................................... 131
Switching seat heating on/of f....... 123
Switching the seat ventilation on/
off .................................................. 124
Selector lever
Cleaning ......................................... 403
see Automatic transmission
Sensors (cleaning instructions) ....... 401
Service
see ASSYST PLUS
Service Centre
see Qualified specialist workshop
Service menu (on-board com-
puter) .................................................. 306
Service products
AdBlue ®
special additive s.............. 472
Brake fluid ..................................... 475
Coolant (engine) ............................ 475
Engine oil ....................................... 473
Fuel ................................................ 468
Important safety notes .................. 468
Washer fluid ................................... 476 Settings
Factory (on-board computer) ......... 313
On-board compute r....................... 307
Shifting to neutral (manual trans-
mission) ............................................. 191
Side lamps
Switching on/of f........................... 136
Side windows
Convenience closing ...................... 107
Convenience opening .................... 107
Important safety notes .................. 106
Opening/closing ............................ 106
Problem (malfunction) ................... 110
Resetting ....................................... 108
Sidebag ................................................ 53
Sliding sunroof
Opening/closing ............................ 111
Rain closing feature ....................... 112
Resetting ....................................... 112
see Panorama sliding sunroof
Snow chains ...................................... 431
Sockets
Centre console .............................. 381
General notes ................................ 381
Rear compartment ......................... 382
Specialist workshop ............................ 27
Spectacles compartment ................. 369
Speed, controlling
see Cruise control
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 312
Digital ............................................ 299
In the Instrument cluster ................. 34
Segments ...................................... 293
Selecting the unit of measure-
ment .............................................. 312
see Instrument cluster
SPEEDTRONIC
Deactivating variable ..................... 221
Display message ............................ 341
Function/note s............................. 219
Important safety notes .................. 219
LIM indicator lamp ......................... 219
Permanent ..................................... 221
Selecting ........................................ 220
Storing the current speed .............. 220 Index
19

Problem
Possible causes/consequences and
M
MSolutions The fuel filler flap can-
not be opened. The fuel filler flap is not unlocked.
or
The key battery is discharged.
X Unlock the vehicle (Y page 91).
or
X Unlock the vehicle using the emergency key element
(Y page 93). The fuel filler flap is unlocked, but the opening mechanism is jam-
med.
X Consult a qualified specialist workshop. AdBlue
®
(BlueTEC vehicles only)
Important notes on use To function properly, BlueTEC exhaust gas
aftertreatment must be operated with the
reducing agent AdBlue ®
. Topping up AdBlue ®
is part of the maintenance work.
When the supply of AdBlue ®
is down to
approximately 3.0 litres, the Refill
Refill
AdBlue See Owner's Manual AdBlue See Owner's Manual message is
shown in the multifunction display.
When the AdBlue ®
supply drops to a mini-
mum, the Refill
Refill AdBlue
AdBlueNo
No start
start in
inX
X
km
km message is shown in the multifunction dis-
play.
If you drive the vehicle faster than 15 km/h,
the Refill AdBlue See Owner's Manual Refill AdBlue See Owner's Manual
message goes out after approximately one
minute.
If the Refill AdBlue No start in X km Refill AdBlue No start in X km
message is shown in the multifunction dis-
play, you can still drive the vehicle over the
distance shown. If the AdBlue ®
is not topped
up, you will subsequently be unable to
start the engine. If the Refill AdBlue
Refill AdBlue
Start not possible
Start not possible message appears in
the multifunction display and the engine does
not start, you must top up AdBlue ®
. X
Add at least 3.5 l of AdBlue ®
.
X Switch on the ignition for at least 60 sec-
onds.
X Start the engine.
i You can also have the AdBlue ®
tank refil-
led at a qualified specialist workshop.
Before driving your vehicle outside Europe,
have the AdBlue ®
supply checked at a quali-
fied specialist workshop.
Further information about BlueTEC exhaust
gas aftertreatment and about AdBlue ®
can
be obtained from any Mercedes-Benz Service Centre.
Important notes on the refilling proce-
dure AdBlue
®
is a water-soluble fluid for the
exhaust gas aftertreatment of diesel engines. It is:
R non-toxic
R colourless and odourless
R non-flammable
If you open the AdBlue ®
tank, small amounts
of ammonia vapour may be released.
Ammonia vapours have a pungent odour and
are particularly irritating to the skin, to
mucous membranes and to the eyes. You may experience a burning sensation in your eyes, 204
RefuellingDriving and parking

nose and throat. You may also experience
coughing and watery eyes.
Do not inhale any ammonia vapours that may
be released. Only fill the AdBlue ®
tank in well-
ventilated areas.
Do not swallow AdBlue ®
or let it come into
contact with skin, eyes or clothing. Keep
AdBlue ®
away from children.
If you or others come into contact with
AdBlue ®
, observe the following:
R immediately rinse AdBlue ®
off your skin
with soap and water.
R if AdBlue ®
comes into contact with your
eyes, immediately rinse them thoroughly
with clean water. Seek medical attention
immediately.
R if AdBlue ®
is swallowed, immediately rinse
your mouth out thoroughly. Drink plenty of
water. Seek medical attention immedi-
ately.
R change immediately out of clothing that
has come into contact with AdBlue ®
.
! Only use AdBlue ®
in accordance with
ISO 22241. Do not mix any additives with
AdBlue ®
, and do not dilute AdBlue ®
with
water. This may destroy the BlueTEC
exhaust gas aftertreatment system.
! In order to fill the AdBlue ®
tank, the vehi-
cle must be parked on a level surface. The
AdBlue ®
tank can only be filled as intended
with the vehicle parked on a level surface.
Fluctuations in capacity will thus be avoi-
ded. Filling a vehicle standing on an uneven
surface is not permitted. There is a danger of overfilling, which can cause damage to
BlueTEC exhaust gas aftertreatment com-
ponents.
! Surfaces which have come into contact
with AdBlue ®
while refilling should be
rinsed immediately with water, or remove
AdBlue ®
with a moist cloth and cold water.
If AdBlue ®
has already crystallised, use a
sponge and cold water to clean the area. AdBlue
®
residue crystallises after a certain
amount of time and soils the affected sur-
faces.
! AdBlue ®
is not a fuel additive and must
not be added to the fuel tank. If AdBlue ®
is
added to the fuel tank, this can lead to
engine damage.
Have the AdBlue ®
tank refilled at a qualified
specialist workshop. However, you can also
top up the AdBlue ®
tank:
R at a filling station with an AdBlue ®
filling
pump
R with AdBlue ®
refill bottles
R with an AdBlue ®
refill canister
When the pump nozzle switches off automat-
ically during filling at a filling pump, the
AdBlue ®
tank has been completely filled. Do
not fill the AdBlue ®
tank any further. AdBlue ®
may leak out.
To avoid transporting already opened refill
containers in the vehicle, completely empty
refill bottles or canisters when filling the
AdBlue ®
tank, if possible.
Further information on AdBlue ®
(Y page 472).
Opening the AdBlue ®
filler cap Example: Saloon Refuelling
205Driving and parking Z

X
Switch the ignition off.
X Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.
X Turn blue AdBlue ®
filler cap ;anti-clock-
wise and remove it.
AdBlue ®
filler cap ;is secured with a plas-
tic strip.
i The fuel filler flap is unlocked or locked
automatically when you unlock or lock the
vehicle.
AdBlue ®
refill canisters !
Do not tighten the disposable hose with
too much force. The disposable hose may
otherwise be destroyed. X
Unscrew the cap from the opening on top of
AdBlue ®
refill canister ;.
X Place disposable hose :on the opening of
AdBlue ®
refill canister ;and screw it on
clockwise until hand-tight. Disposable hose
:remains closed until
you fasten disposable hose :to the
AdBlue ®
filler neck of the vehicle.
X Place disposable hose :on the filler neck
on the vehicle and screw it on clockwise
until hand-tight. When you feel resistance,
disposable hose :is sufficiently secured.
X Lift up and tip AdBlue ®
refill canister ;.
Filling stops when the AdBlue ®
tank is com-
pletely filled. Do not fill the AdBlue ®
tank
any further. AdBlue ®
refill canister ;can
be removed when it has been only partially emptied.
X Turn disposable hose :on the filler neck
of the vehicle anti-clockwise and remove it.
X Turn disposable hose :on the opening of
AdBlue ®
refill canister ;anti-clockwise
and remove it.
X Reseal AdBlue ®
refill canister ;with the
cap.
AdBlue ®
refill canisters are available at many
filling stations or at a Mercedes-Benz Service
Centre. AdBlue ®
refill canisters are often sold
with a filler hose. A filler hose that does not
exactly fit the vehicle's AdBlue ®
tank offers
no protection against overfilling. AdBlue ®
may leak out as a result of overfilling.
Mercedes-Benz offers a special disposable
hose with overfill protection. You can obtain
this from any Mercedes-Benz Service Centre.
AdBlue ®
is available in a variety of containers
and receptacles. Only use the disposable
hose with the Mercedes-Benz AdBlue ®
refill
canisters.
AdBlue ®
refill bottle !
Screw on the AdBlue ®
refill bottle only
hand-tight. It may otherwise be destroyed. 206
RefuellingDriving and parking

X
Unscrew the protective cap from AdBlue ®
refill bottle :.
X Place AdBlue ®
refill bottle :on the filler
neck as shown and screw it on hand-tight.
X Press AdBlue ®
refill bottle :towards the
filler neck.
The AdBlue ®
tank is filled. This could last up
to one minute.
When AdBlue ®
refill bottle :is no longer
pressed, filling stops and the bottle may be
taken off again after being only partially
emptied.
X Release AdBlue ®
refill bottle :.
X Turn AdBlue ®
refill bottle :anti-clockwise
and remove it.
X Screw the protective cap onto AdBlue ®
refill bottle :again.
AdBlue ®
refill bottles are available at many
filling stations or at a Mercedes-Benz Service
Centre. Refill bottles without a threaded seal offer no protection against overfilling.
AdBlue ®
may leak out as a result of overfilling.
Mercedes-Benz offers special refill bottles
with a threaded cap. These are available at
any Mercedes-Benz Service Centre. Closing the AdBlue
®
filler cap Example: Saloon
X Fit AdBlue ®
filler cap ;on the filler neck
and turn it clockwise.
X To close the fuel filler flap, press it in the
direction of arrow :.
X Drive faster than 15 km/h.
The Refill AdBlue See Owner's Man‐ Refill AdBlue See Owner's Man‐
ual
ual message goes out after approximately
one minute.
If the Refill
Refill AdBlue
AdBlueSee
SeeOwner's
Owner's Manual
Manual
message continues to be shown in the multi-
function display, you must top up with more
AdBlue ®
. Parking
Important safety notes
G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rial can come into contact with hot vehicle
components. In particular, do not park on dry grassland or harvested grain fields. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake Parking
207Driving and parking
Z

Redialling
The on-board computer saves the last names
or numbers dialled in the redial memory.
X Use ò on the steering wheel to call up
the list of menus.
X Press :or9 on the steering wheel
to select the Telephone
Telephone menu.
X Confirm by pressing aon the steering
wheel.
X Press the 6button to switch to the
redial memory.
X Press the :or9 button to select the
desired name or number.
X Press the 6ora button to start dial-
ling.
or
X To exit the redial memory: press the
~ or% button. Assistance graphic menu
X
Use ò on the steering wheel to call up
the list of menus.
X Press the :or9 button on the steer-
ing wheel to select the Assistance
Assistance
graphic
graphic menu.
X Confirm by pressing aon the steering
wheel.
The multifunction display shows the
DISTRONIC PLUS distance display in the
assistance graphic.
X Press :to display the ATTEN-
TION ASSIST assessment. The assistance graphic shows you the status
of and/or information from the following driv-ing systems or driving safety systems:
R DISTRONIC PLUS (Y page 228)
R Traffic Sign Assist (Y page 256)
R Distance warning function and autono-
mous braking system of COLLISION PRE-
VENTION ASSIST PLUS (Y page 308)
R PRE-SAFE ®
Brake (Y page 82)
R Blind Spot Assist (Y page 259) or Active
Blind Spot Assist (Y page 263)
R ATTENTION ASSIST (Y page 255)
R Lane Keeping Assist (Y page 261)or Active
Lane Keeping Assist (Y page 266) Service menu
Introduction In the
Service Service menu, you have the following
options:
R Calling up display messages in the mes-
sage memory (Y page 314)
R Restarting the tyre pressure loss warning
system (Y page 437)
R Checking the tyre pressure electronically
(Y page 434)
R Calling up the service due date
(Y page 395)
R Displaying the coolant temperature
(Y page 307)
R Displaying the AdBlue ®
level and range
(Y page 307) (BlueTEC vehicles only) 306
Menus and submenusOn-board computer and displays

Displaying the coolant temperature
The coolant temperature is also shown in the
instrument cluster in the rev counter.
Observe the notes on coolant temperature
(Y page 293).
X Use ò on the steering wheel to call up
the list of menus.
X Press the :or9 button on the steer-
ing wheel to select the Service Servicemenu.
X Confirm by pressing aon the steering
wheel.
X Use : or9 to select the Coolant Coolant
submenu.
X Press ato confirm your selection.
The coolant temperature is shown in a bar
display.
Displaying AdBlue ®
level and range This menu is only available in BlueTEC vehi-
cles.
X Use ò on the steering wheel to call up
the list of menus.
X Press the :or9 button on the steer-
ing wheel to select the Service
Service menu.
X Confirm by pressing aon the steering
wheel.
X Select the AdBlue AdBluesubmenu using :or
9.
X Press ato confirm your selection.
The range and AdBlue ®
level appear in a bar
graph in the multifunction display.
Observe the information and notes on "Refu- elling" (Y page 204). Settings menu
Introduction In the
Settings
Settings menu, you have the following
options:
R Changing assistance settings
(Y page 307)
R Changing head-up display settings
(Y page 310)
R Changing the light settings (Y page 311)
R Changing the instrument cluster settings
(Y page 312)
R Changing the vehicle settings
(Y page 313)
R Restoring the factory settings
(Y page 313)
Assistance submenu Deactivating/activating ESP
®
Observe the "Important safety notes" section
in the description of ESP ®
(Y page 80). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilises the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following. Menus and submenus
307On-boardcompu ter and displays Z

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