2012 MERCEDES-BENZ C-CLASS SALOON steering

Display messages
Possible causes/consequences and M
MSolutions &
WARNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
The tyre pressure monitoring sy stem cann otissue a warning if there is pressure loss in one or more of the
tyres.
Ty res with insuf ficient tyre pressure may impair the driving characteristics as well as steering and braking. #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. Tyre press. monitor inoper-
ative No wheel sensors
*T
he wheels fitted do not ha vesuitable tyre pressure sensors. The tyre pressure monitoring sy stem is deactivated. #
Fit wheels with suitable tyre pressure sensors.
h
Wheel sensor(s) missing *T
here is no signal from the tyre pressure sensor of one or more wheels. Nopressure value is displa yedfo rthe
af fected tyre. #
Have thefa ulty tyre pressure sensor replaced at a qualified specialist workshop.
h Check tyre(s) *T
he tyre pressure in one or more tyres has dropped significantl y.
The wheel position is displa yed. A warning tone also sounds. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
R The tyres can burs t.
R The tyres can wearexc essively and/or une venly. 490
Display messages and warning/indicator lamps
Internal use only

Display messages
Possible causes/consequences and M
MSolutions
R The driving characteristics as well as thesteering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the tyre pressure (/ page411) and the tyres.
h Rectify tyre pressure *T
he tyre pressure is too low in at least one of the tyres, or the dif fere nce in tyre pressure between the individual
wheels is too great. #
Check the tyre pressure and add air, if necessar y. #
When the tyre pressure is cor rect, restart the tyre pressure monitoring sy stem (/ page413).
h War ning tyre defect *T
he tyre pressure in one or more tyres has dropped suddenly. The wheel position will be displa yed. &
WARNING Risk of an accident from driving wi thaflat tyre
R The tyres can overheat and be damaged.
R The driving characteristics as well as thesteering and braking characteristics may be great lyimpaired.
Yo u could then lose control of theve hicle. #
Do not drive with a flat tyre. Display messages and
warning/indicator lamps 491
Internal use only

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Remo vethe objects from the front passenger seat.
The red seat belt warning lamp lights up once the engine has star ted:
In addition, an intermittent warning tone may sound.
The red seat belt warning lamp reminds the driver and front passenger tofasten their seat belts. #
Fasten your seat belt (/ page41).
If yo u ha veplaced objects on the front passenger seat, there d seat belt warning lamp may remain lit. Ve
hicle Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ù Po we rst eering warning
lamp (red) *T
he red po werst eering sy stem warning lamp is lit while the engine is running.
The po wer assi stance or thesteering itself is malfunctioning. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do
not continue driving under any circums tances. #
Consult a qualified specialist workshop. #
Notethe messages on the multifunction displa y. Displ
aymessa ges and warning/indicator lamps 501
Internal use only

Ty
re pressure moni tor Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressure monitoring
sy stem warning lamp *The
yellow tyre pressure monitor warning lamp (pressure loss/malfunction) flashes for appro ximately one minu te
and then remains lit.
or
The yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) is lit.
The yellow tyre pressure monitor warning lamp (pressure loss/malfunction) flashes for appr oxima tely one
minute and then remains lit:
The tyre pressu remonitor is malfunctioning. &
WARNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
The tyre pressure monitoring sy stem cann otissue a warning if there is pressure loss in one or more of the tyres.
Ty res with insuf ficient tyre pressure may impair the driving characteristics as well as steering and braking. #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. The
yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) is lit:
The tyre pressure monitoring sy stem has de tected tyre pressure loss in at least one of the tyres. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
R The tyres can burs t. Displ
aymessa ges and warning/indicator lamps 511
Internal use only

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
R The tyres can wearexc essively and/or une venly.
R The driving characteristics as well as thesteering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the tyre pressure and the tyres. 512
Displaymessa ges and warning/indicator lamps
Internal use only

Ac
tivating/deactivating thewa rning...... 218
Fu nction................................................. 216
Sy stem limits.........................................2 16
Tr ailer operation.................................... .216
Ac tive Parking Assist
Exiting a parking space......................... 234
Fu nction................................................ 231
Pa rking................................................. .233
Sy stem limitations................................. 231
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st
Displ ay................................................... 201
Fu nction................................................ 201
Ac tive Steering Assist
Ac tivating/deactivating......................... 205
Ac tive Emergency Stop Assis t............... 206
Fu nction................................................ 203
Sy stem limits.........................................2 03
Ad aptive brake lights ................................ 19 2
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC Ad
aptive Highbeam Assist
Fu nction................................................ 13 0
Switching on/of f................................... 131
Ad aptive Highbeam Assist Plus
Fu nction................................................ 13 2
Switching on/of f................................... 13 3
Ad Blue ®
Ad ditives...............................................4 35
Capacity................................................ 436
No tes..................................................... 175
Purity..................................................... 435
To pping up............................................. 176
Ad ditional door lo ck.................................... 76
Ad diti ves
Ad Blue ®
................................................ 435
Engine oil.............................................. 436
Fu el....................................................... 433
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel Ad
dress book
see Contacts
Ad justing the balance/ fader
Adva nced sound sy stem........................3 71
Burmes ter®
sur round sound sy stem..... 370
Ad justing the bass, mid- range and
treble
Burmes ter®
sur round sound sy stem..... 370
Ad justing the headlamp range ................. 12 6
Ad justing the mid- range, treble and
bass
Burmes ter®
sur round sound sy stem..... 370
Ad justing the sound focus
Burmes ter®
sur round sound sy stem..... 370
Ad justing treble, mid- range and bass
settings
Adva nced sound sy stem........................3 71
Burmes ter®
sur round sound sy stem..... 370
ADS PLUS da mping sy stem
see AIRMATIC
Ad vanced sound sy stem
Ad justing the balance/fader.................. 371514
Index
Internal use only

HANDS-FREE
ACCES S............................. 83
Locking separately.................................. 85
Opening................................................... 80
Opening dimensions.............................. 440
Brake Assist System
see BAS (Brake Assi stSystem)
Brake fluid
No tes....................................................4 38
Brake forc e distribution
EBD (Elect ronic Brake forc e Distribu‐
tion).......................................................1 90
Brakes ABS (Anti-lock Braking Sy stem).............1 87
Ac tive Brake Assi st................................ 206
Ad aptive brake lights............................. 19 2
BA S (Brake Assi stSystem).................... 187
Driving tips........................................... .159
EBD (Electronic Brake forc e Distribu‐
tion).......................................................1 90
HOLD function....................................... 19 0
Limited braking ef fect (salt-treated
ro ads).................................................... 15 9
New/replaced brakepads/brake
discs...................................................... 157Ru
nning-in no tes.................................... 157
Braking assistance see BAS (Brake Assi stSystem)
Breakdown Overview of the help functions................ 18
To w- starting......................................... .407
To wing away.......................................... 403
Tr ansporting theve hicle........................ 405
Wheel chang e....................................... .418
Breakdown see Flat tyre
Burmes ter®
sur round sound sy stem
Ad justing the balance/fader................. 370
Ad justing the sound focus..................... 370
Ad justing treble, mid-range and bass
setting s................................................. 370
Au tomatic volume adjustment............... 370
Calling up the sound menu.................... 370
Information............................................ 369
Switching the sur round sound on/off...3 70
Buttons Steering wheel....................................... 24 6 C
Call list Making a call........................................ .324
Overview............................................... 323
Calling up the sound menu
Adva nced sound sy stem........................3 71
Burmes ter®
sur round sound sy stem..... 370
Calls Accepting.............................................. 320
Ac tivating functions du ring a cal l.......... 320
Calls wi thseveral participant s............... 320
Declining............................................... 320
Ending a call.......................................... 320
Incoming call du ring an existing call......3 21
Making.................................................. 320
Mercedes me.........................................3 31
Camera see 360° Camera
see Reversing camera
Car key
see Key
Car wash
see Care 518
Index
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