2012 MERCEDES-BENZ C-CLASS SALOON engine coolant

*
NO
TEDama gecaused byincor rect cool‐
ant #
Only use coolant that has been pre‐
mixed with therequ ired antifreeze pro‐
te ction.
Information on coolant is available at thefo l‐
lowing locations:
R inthe Mercedes-Benz Specification for
Operating Fluids 310.1
- at https://be vo.mercedes-benz.com
- inthe Mercedes-Benz BeVo app
R at a qualified specialist workshop *
NO
TEOverheating at high outside tem‐
peratures If an inapp
ropriate coolant is used, the
engine cooling sy stem is not suf ficiently pro‐
te cted against overheating and cor rosion at
high outside temp eratures. #
Alw ays use coolant appr ovedby
Mercedes-Benz. #
Obser vethe instructions in the
Mercedes-Benz Specifications for Oper‐
ating Fluids 310.1. Ha
ve the coolant regularly replaced at a qualified
specialist workshop.
Proportion of antifreeze concentrate in the
engine cooling sy stem:
R a minimum of 50% (antifreeze pr otection
down toappr oximately -37°C)
R a maximum of 55% (antifreeze pr otection
down to-45°C) Note
s on windscreen washer fluid Obser
vethe no tes on operating fluids
(/ page 430). &
WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Wi ndsc reen washer concentrate is highly
fl ammable. It could ignite if it comes into
con tact with hot engine component parts or
th eex haust sy stem. #
Make sure that no windscre enwasher
concentrate spills out next tothefiller
opening. *
NO
TEDama getotheex terior lighting
due tounsuitable windsc reen washer
fl uid Uns
uitable windsc reen washer fluids may
damage the plastic sur face of theex terior
lighting. #
Only use windscreen washer fluids
which are also suitable for use on plas‐
tic sur faces, e.g. MB SummerFit or MB
Wi nterFit. *
NO
TEBlocked spr aynozzles caused by
mixing windscreen washer fluids #
Do not mix MB SummerFit and MB Win‐
te rFit with other windscreen washer flu‐
ids. Te
ch nical da ta439
Internal use only

Display messages
Possible causes/consequences and M
MSolutions
¥ Top up washer fluid *T
hewasher fluid le vel in thewa sher fluid reser voir has dropped below the minimum. #
Top up thewa sher fluid (/ page 380). Engine
Display messages
Possible causes/consequences and M
MSolutions
To switch off the engine,
press Start/Stop button
for at least 3 seconds or 3
times. *Y
ou ha vepressed thest art/ stop button while theve hicle is in motion. #
Information about switching off the engine while driving (/ page155).
+
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* NO
TEEngine damage duetoinsuf ficient coolant #
Avoid long journe yswith insuf ficient coolant. #
Add coolant (/ page379). #
Have the engine cooling sy stem checked at a qualified specialist workshop. 460
Display messages and warning/indicator lamps
Internal use only

Display messages
Possible causes/consequences and M
MSolutions
ÿ Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. #
Stop theve hicle immediately in accordance with the traf fic conditions and switch off the engine. &
WARNING Risk of burn s when opening the bonn et
If yo u open the bonn etwhen the engine has overheated or when there is a fire inthe engine compartment, the
fo llowing situations may occur:
R You could come into contact with hot gases.
R You could come into contact with other hot, escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the bonn etclosed and call thefire service. #
Wait until the engine has cooled down. #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 120°C.
ÿ *T
hefan mo tor is defective. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 120 °C. Displ
aymessa ges and warning/indicator lamps 461
Internal use only

Instrument display (standard)
Wi
descreen cock pit instrument displ ay Depending on
the display setting, the positions
of the indicator lamps on the instrument display
may dif fer from theex ample shown.
Indicator and warning lamps:
6 Re
stra int sy stem (/ page 500)
ü Seat belt (/
page 500)
ï Trailer hit ch (/page 501)
Ù Powe rst eering (/ page 501)
ÿ Coolanttemp erature (/ page 502)
; Engine diagnostics (/
page 502)
% Preglow
# Elect
rical fault (/ page 502)
8 Re
ser vefuel with fuel filler flap loca‐
tion indicator (/ page 502)
! Elect
ric pa rking brake (red)
(/ page 505)
! Electric parking brake (yellow)
(/
page 505)
J Brakes (yellow) (/
page 505)
J Brakes (red) (/
page 505)
L Distance warning (/ page 507) ä
AIRMATIC (/ page 507)
ä DYNA MIC BODY CONTROL
(/ page 507)
! ABS (/
page 508)
÷ ESP®
(/ page 508)
å ESP®
OFF (/ page 508)
h Ty
re pressure monitoring sy stem
(/ page 511)
T St
anding lights (/ page125)
L Low beam (/
page125)
K High beam (/
page127)
#! Tu
rn signal lights (/ page127)
R Re
ar fog light (/ page125) Displ
aymessa ges and warning/indicator lamps 499
Internal use only

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ï Tr ailer tow hit chwarning
lamp *T
hered trailer hitch warning lamp is lit.
The trailer hitch is not operational. &
WARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivel mo vement and do not re-couple the trailer until thewa rning/indicator lamp goes out. #
Notethe messages on the multifunction displa y.Engine
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ÿ Coolant warning lamp *T
he red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty 502
Display messages and warning/indicator lamps
Internal use only

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
R The coolant pump is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120°C. &
WARNING Risk of burn s when opening the bonn et
If yo u open the bonn etwhen the engine has overheated or when there is a fire inthe engine compartment, the
fo llowing situations may occur:
R You could come into contact with hot gases.
R You could come into contact with other hot, escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the bonn etclosed and call thefire service. #
Stop theve hicle immediately in accordance with the traf fic conditions and switch off the engine. Do not continue
driving. #
Notethe messages on the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale: #
Consult a qualified specialist workshop.
If th e coolant temp erature display is at the upper end of thete mp erature scale: #
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. #
Check the coolant le vel (/ page 379). Displ
aymessa ges and warning/indicator lamps 503
Internal use only

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that the
coolant temp erature display remains below 120°C.
; Engine diagnosis warning
lamp *T
he yellow engine diagno stics warning lamp is lit while the engine is running.
A malfunction has occu rred in the engine, theex haust sy stem or the fuel sy stem.
The emissions limit value may ha vebeen exceeded and the engine may be running in eme rgency operation mode. #
Have theve hicle checked as soon as possible at a qualified specialist workshop.
Ve hicles with a diesel engine: the fuel tank may ha vebeen run dr y. #
Start the engine thre eto four times af terre fuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency operation mode is cancelled. The vehicle need
not be checked.
#
Elect rical fault warning
lamp *T
hered elect rical fault warning lamp is lit.
There is a fault in the electrics. #
Notethe messages on the multifunction displa y.504
Display messages and warning/indicator lamps
Internal use only

Contacts
Calling up.............................................. 322
Deleting................................................ .323
Downloading (from mobile phone)......... 321
Importing.............................................. 322
Importing (o verview)............................. 322
Information........................................... .321
Making a call......................................... 323
Na me form at......................................... 322
Options................................................ .323
St oring..................................................3 23
Controller Operating.............................................. 267
Conv enience closing .................................. .88
Con venience opening ..................................87
Coolant (engine) Check le vel............................................ 379
No tes....................................................4 38
Cooling see Clima tecontrol
Co pyright..................................................... 36
Cornering light ...........................................1 29
Cross Traf fic Alert..................................... 236 Crosswind Assist
Function/no tes..................................... 189
Cruise control Activating.............................................. 19 5
Buttons.................................................. 19 5
Calling up a spee d................................. 19 5
Deactivating.......................................... 19 5
Fu nction................................................ 194
Re quirements........................................ 19 5
Selecting............................................... 19 5
Setting a speed..................................... 19 5
St oring a speed.....................................1 95
Sy stem limitations................................. 194 D
Dashboa rd
see Cockpit
Data acquisition Vehicle.................................................... 33
Data import/export Function/no tes..................................... 280
Importing/exporting.............................. 281
Data pr otection rights
Data storage............................................ 36 Data
storage
Data pr otection rights............................. 36
Electro nic control units........................... 33
Online service s........................................ 35
Ve hicle.................................................... 33
Date Setting the time and date automati‐
cally....................................................... 275
Deactivating the ala rm(ATA ) ...................... 95
Deale rship
see Qualified speciali stwo rkshop
Declaration of conformity Electromagnetic compatibility.................25
Jack......................................................... 28
Specific absor ption rate.......................... 25
TIREFIT kit............................................... 29
Wi reless vehicle components.................. 25
Decorative foil (cleaning instructions) .... 383
DeNOx agent see AdBlue ®
De stination
Editing intermediate destinations......... .292
Editing the pr evious destinations.......... 303 Index
521
Internal use only