2012 MERCEDES-BENZ C-CLASS SALOON warning

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
J Brake sy stem warning lamp
(yellow) *T
he yellow brake sy stem warning lamp is lit while the engine is running. &
WARNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Adjust your speed and drive on carefull y,leaving a suitable dis tance totheve hicle in front. #
Ifth e multifunction display sho wsa display message, obse rve it. #
Consult a qualified specialist workshop.
J Brake sy stem warning lamp
(red) *T
he red brake sy stem warning lamp is lit while the engine is running.
Po ssible causes:
R The brake forc e boosting is malfunctioning and the braking characteristics may be af fected.
R The reis insuf ficient brake fluid in the brake fluid reser voir. #
Notethe messages on the multifunction displa y. &
WARNING Risk of accident and inju ryif brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. The braking
ch aracteristics may be impaired. The braking dis tance can increase in emergency braking situations. 506
Display messa ges and warning/indicator lamps
Internal use only

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Stop in a safe location immediately. Do not continue driving! #
Consult a qualified specialist workshop. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driv‐
ing. #
Consult a qualified specialist workshop. #
Do not top up the brake fluid. Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
L Wa rning lamp for dis tance
wa rning function *T
he red dis tancewarning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance. Display messa
ges and warning/indicator lamps 507
Internal use only

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Fu nction of Active Brake Assi st (/ page 206).
ä
Suspension warning lamp
(yellow) *T
he yellow AIRMATIC warning lamp is lit.
The yellow DYNA MIC BODY CONTROL warning lamp is lit.
A fault has occur red in AIRMATIC.
A fault has occur red in theDY NA MIC BODY CONTROL. #
Notethe messages on the multifunction displa y.Driving saf
ety sy stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
! ABS warning lamp *T
he yellow ABS warning lamp is lit while the engine is running.
ABS is malfunctioning.
If th ere is an additional warning tone, EBD is malfunctioning.
Other driving sy stems and driving saf ety sy stems may also be malfunctioning. #
Notethe messages on the multifunction displa y. &
WARNING Thereis a risk of skidding if EBD or ABS is malfunctioning
The wheels may lock during braking. 508
Display messages and warning/indicator lamps
Internal use only

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. ÷
ESP ®
wa rning lamp *
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
or
The yellow ESP ®
wa rning lamp is lit while the engine is running.
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion:
One or more wheels has reached its grip limit (/ page188). #
Adapt your driving style to suit thero ad and weather conditions.
The yellow ESP warning lamp ®
is lit while the engine is running.
ESP ®
is malfunctioning.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning. #
Notethe messages on the multifunction displa y. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems
are switched off. Display messages and
warning/indicator lamps 509
Internal use only

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified specialist workshop. å
ESP ®
OFF warning lamp *
The yellow ESP ®
OFF warning lamp is lit while the engine is running.
ESP ®
is deacti vated.
Other driving sy stems and driving saf ety sy stems may also be inoperative. &
WARNING Risk of skidding when driving wi thESP ®
deacti vated
ESP ®
does not act tostabilise theve hicle. The availability of fur ther driving saf ety sy stems is also limited. #
Drive on carefull y. #
Deactivate ESP ®
only for as long as the situation requ ires.
If ESP ®
cannot be activated, ESP ®
is malfunctioning. #
Have ESP ®
ch ecked immediately at a qualified specialist workshop. #
Obser vethe no tes on deactivating ESP ®
(/ page 188). 51 0
Displaymessa ges and warning/indicator lamps
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

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