engine coolant MERCEDES-BENZ C-CLASS SALOON 2012 User Guide

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

é
ATTENTION ASSIS T:Take a
break!....................................................4 70
: Automatic driving lights inoper‐
ative....................................................... 451
Á Change key bat teries ...................4 49
J Checkbrake fluid le vel................. 469
# Check brake pads See Owner's
Manual.................................................. 469
5 Check engine oil le vel when
next refuelling....................................... 496
ï Checktrailer hitch lo ck................ 456
h Check tyre(s)................................ 490
! Clean the fuel filter ...................... 462
ÿ Coolant Stop vehicle Switch
engine off..............................................4 61
! currently una vailable See Own‐
er's Manual ............................................ 481
÷ currently una vailable See Own‐
er's Manual .......................................... .482 5
Engine oil le vel cannot be
measured .............................................. 498
5 Engine oil le velRe duce oil le vel.... 497
5 Engine oil le velSt op vehicle
Switch engine off.................................. 497
5 Engine oil pressure Stop
Switch off engine.................................. 498
ä Fault Drive at max. 80 km/h........ 478
6 Front left malfunction Consult
wo rkshop (e xample).............................. 446
& inoperative Battery low................ 455
& inoperative Refuel vehicle ............ 455
& inoperative See Owner's Man...... 455
! inoperative See Owner's Man‐
ual......................................................... 482
÷ inoperative See Owner's Man‐
ual......................................................... 483
T inoperative See Owner's Man‐
ual......................................................... 484
G Inoperative................................... 486 :
Intelligent Light Sy stem inoper‐
ative...................................................... 452
Á Key not de tected (red displ ay
messa ge)............................................... 450
Á Key not de tected (white display
messa ge)............................................... 449
: Left dipped beam (e xamp le)........ .451
6 Left windowbag malfunction
Consult workshop (e xample)................ .446
¢ Lowe ring..................................... .479
: Malfunction See Owner's Man‐
ual......................................................... 451
ð Maximum speed exceeded ........... 473
Ø ..................................................... 493
ç Off................................................ 472
ë Off................................................ 470
! Parking brake See Owner's
Manual .................................................. 465
É Please reduce speed .................... 480 Index
523
Internal use only

Ý
Please wait 48 V battery charg‐
ing ........................................................ .488
_ Rear left seat backrest not
loc ked (Example)................................... 459
h Rectify tyre pressure.................... 491
Ø Refill Ad Blue See Owne r’s
Manual.................................................. 493
! Release parking brake .................. 468
¸ Replace air cleaner ...................... 462
Á Replace key.................................. 449
8 Reser vefuel le vel......................... 462
6 Restra int sys. malfunction Con‐
sult workshop........................................ 446
# See Owner's Manual.................... 487
Ù Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual ...... 457
Ù Steering malfunction Stop
immediately See Owner's Manual ......... 458
# Stop vehicle Lea veengine run‐
ning ....................................................... 488 #
Stop vehicle See Owner's Man‐
ual......................................................... 487
É Stop vehicle Vehicle too low......... 479
ç suspended.................................... 472
: Switch off lights ........................... 452
: Switch on headlamps................... 452
Ø Top up AdBlue Emergency op.
in XXX miles See Owner's Manual......... 493
+ Top up coolant See Owner ’s
Manual.................................................. 460
¥ Top up washer fluid ...................... 460
! Turn on the ignition torelease
th e parking brake..................................4 68
d Vehicle is operational Switch
off ignition before exiting..................... .456
É Vehicle rising Please wait............ .480
É Vehicle rising................................4 80
h Warning tyre defect..................... .491
h Wheel sensor(s) missing .............. 490Ø
XX,X l Top up AdBlue Switch on
ignition, wait 60 sec. or eng. start
not poss................................................ 494
Ac tive Blind Spot Assi stcur rently
una vailable See Owner's Manual ...........476
Ac tive Blind Spot Assi stinope rative ....... 476
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual .................................................. 477
Ac tive bonnet malfunction See Own‐
er's Manual........................................... 458
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ........ 484
Ac tive Brake Assi stFunctions limited
See Owner's Manual............................. 485
Ac tive Dis tance Assi stavailable again ...4 73
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual ...........472
Ac tive Dis tance Assi stinope rative ......... 472 524
Index
Internal use only

Ad
ditives (fuel)...................................... 433
Brake fluid............................................ .438
Coolant (engine).................................... 438
Engine oil.............................................. 436
Fu el (diesel)...........................................4 33
Fu el (petrol)........................................... 432
No tes....................................................4 30
Wi ndsc reen washer fluid.......................4 39
Operating saf ety
48 V on-boa rdelectrical sy stem.............. 23
Declaration of confo rmity (elect ro‐
magnetic compatibility)........................... 25
Declaration of conformity (jack).............. 28
Declaration of conformity (TIREFIT kit).... 29
Declaration of conformity (wire less
ve hicle components)...............................25
EQ Boo st................................................. 23
Information.............................................. 23
Ope rating sy stem
see On-board computer
Optimised acceleration Activating.............................................. 15 8
Outside mir rors
Anti-dazzle mode (automatic)................ 14 2Au
tomatic mir rorfo lding function......... .143
Fo lding in/out........................................ 141
Operating the memory function.............1 11
Pa rking position..................................... 14 2
Setting................................................... 141
Overhead control panel Overview................................................. 14
Owner's Manual Vehicle equipment................................... 23
Owner's Manual (digital)............................ 20 P
Pa int code.................................................. 428
Pa intwork (cleaning instructions) ...........383
Pa norama sliding sunroof
see Sliding sunroof
Pa rk position
Inserting................................................ 16 9
Selecting au tomatical ly......................... 16 9
Pa rked Vehicle Locator
Switching transmission on/of f.............. 276
Pa rking
see Electric parking brake Pa
rking aid
see Parking Assist PARKTRONIC
Pa rking Assist PARKTRONIC
Ac tivating.............................................. 230
Ad justing warning tones........................ 231
Deactivating.......................................... 230
Fu nction................................................ 227
Side impact pr otection.......................... 229
Sy stem limitations................................. 227
Pa rking assistance sy stems
see Active Parking Assist
Pa rking brake
see Electric parking brake
Pa rking lights............................................ .125
Pa rking position
Outside mir rors..................................... 14 2
St oring the position of the passenger
outside mir ror using reve rsege ar.......... 14 3
Pa rking up.................................................. 184
PA SSENGER AIR BAGstatus display
see Automatic front passenger front
airbag shutoff 538
Index
Internal use only

Wa
rning/indicator lamp
! ABSwarning lamp....................... .508
J Brake sy stem warning lamp
(red)...................................................... 506
J Brake sy stem warning lamp
(yellow).................................................. 506
ÿ Coolant warning lamp................. .502
! Electric parking brake indicator
lamp (red).............................................. 505
# Electrical fault warning lamp....... .504
; Engine diagnosis warning lamp....5 04
å ESP®
OFF warning lamp.............. .510
÷ ESP®
wa rning lamp..................... .509
8 Fuelreser ve wa rning lamp
lights up................................................ 505
Ù Powe rst eering warning lamp
(red)...................................................... .501
6 Restra int sy stem warning lamp....5 00
ü Seat belt warning lamp............... .500 ä
Suspension warning lamp (yel‐
low)....................................................... 508
! The elect ric pa rking brake (yel‐
low) indicator lamp............................... .505
ï Trailer tow hit chwarning lam p..... 502
h Tyre pressure monitoring sys‐
te m wa rning lamp................................. .511
L Warning lamp for dis tance
wa rning function................................... .507
Wa rning/indicator lamps
Overview............................................... 498
PA SSENGER AIR BAG.............................. 48
Wa rranty ...................................................... 33
Wa sher fluid
see Windsc reen washer fluid
Wa shing byhand (care)............................ 382
Wa ter tank
see Air-water duct
We ather information ................................. 313What3words
Destination entry with a 3 word
address................................................. 293
Wheel change
Fitting a new wheel............................... 422
Lo we ring theve hicle.............................4 23
Prepa ration............................................ 41 8
Ra ising theve hicle................................4 20
Re moving a wheel................................. 422
Re moving/fitting hub caps....................4 19
Wheel change
see Emergency spare wheel
Wheel rotation .......................................... .417
Wheels Care ...................................................... 384
Changing hub caps................................ 419
Checking............................................... .410
Checking the tyre pressure (tyre
pressure monitoring sy stem)................. 413
Fitting................................................... .422
Flat tyr e................................................. 390
Inter changing......................................... 417
MOExtended tyres................................. 391
Noise.....................................................4 10 Index
551
Internal use only