2012 MERCEDES-BENZ C-CLASS SALOON oil pressure

#
Turn cap 1anti-clockwise and remo veit. #
Top up the engine oil. #
Replace cap 1and turn it clockwise until it
engages. #
Check the oil le vel again (/ page376). Checking
the coolant le vel &
WARNING Risk of burn s from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch co mponent parts described in
th efo llowing. &
WARNING Risk of scalding from hot
coolant
If yo u open the cap, you could be scalded. #
Let the mo tor cool down before opening
th e cap. #
When opening the cap, wear pr otective
gl ove s and saf etygl asses. #
Open the cap slowly torelease pres‐
sure. #
Park theve hicle on a le vel sur face. #
Check the coolant temp erature display in the
instrument clus ter.
The coolant temp erature must be below
70°C. #
Slowly turn cap 1anti-clockwise torelease
ove rpressure. Maintenance and care
37 9
Internal use only

R
for car washes with a con veyo r sy stem:
- neutral iis engaged.
- Ifyo uwo uld like tolea vetheve hicle while
it is being washed, make sure theke y is
located in theve hicle. The park position
j isotherwise automatically engaged.
% If, af terth e car wash, youre mo vethewax
from the windscreen and wiper rubbers, this
will pr event smearing and reduce wiper
noise. Information on using a high-p
ressure cleaner &
WARNING Risk of an accident when
using high-pressure cleane rswith round-
spray nozzles
The wate r jet can cause extern ally invisible
damage.
Components damaged in this wa y may unex‐
pec tedly fail. #
Do not use a high-pressure cleaner with
round-spr aynozzles. #
Have damaged tyres or chassis parts
re placed immediatel y. To
avo id damage to yourvehicle, obser vethefo l‐
lowing when using a high-pressure cleaner:
R The key is at a minimum distance of 3 m
aw ay from theve hicle. Otherwise the boot lid
could open unintentionall y.
R Maintain a dis tance of at least 30 cm tothe
ve hicle.
R Vehicles with decora tivefoil: parts of your
ve hicle are co vered with a decorative foil.
Maintain a dis tance of at least 70 cm
between thefo il-c ove red parts of theve hicle
and the nozzle of the high-pressure cleaner.
Mo vethe high-pressure cleaner nozzle
around whilst cleaning. The waterte mp era‐
ture of the high-pressure cleaner must not
exc eed 60°C.
R Obser vethe information on the cor rect dis‐
tan ce in the equipment manufacturer's oper‐
ating instructions.
R Do not direct the nozzle of the high-pressure
cleaner directly at sensitive parts, e.g. tyres, ga
ps, elect rical components, batteries, light
sou rces and ventilation slits. Wa
shing theve hicle byhand *
NO
TEEngine damage duetowa ter
ing ress #
Take care not topoint thewate r jet
directly towa rdsth e air inlet grille below
th e bonn et. obser
vethe legal requ irements, e.g. in a number
of countries, washing byhand is only permitted
in specially designated wash ba ys. #
Use a mild cleaning agent, e.g. car shampoo. #
Washtheve hicle with luk ewarmwate r using
a soft car sponge. When doing so, do not
ex pose theve hicle todirect sunlight. #
Carefully hose theve hicle off with water and
dry using a chamois.
% Obse rveth e no tes on the care of car parts
(/ page 384). 382
Maintenance and care
Internal use only

Wi
per blades
R Movethe wiper arms into there placement
position (/ page139).
R With th e wiper arms folded out, clean the
wiper blades with a damp clo th.
R Do not clean the wiper blades too of ten.
Ex terior lighting
R Clean the lenses with a wet sponge and mild
cleaning agent, e.g. car sha mpoo.
R Only use cleaning agents or cleaning clo ths
th at are suitable for plast ic lenses.
Sensors
R Clean the sensors in the front and rear
bumpers with a soft clo thand car shampoo
(/ page 186).
R When using a high -pressure cleaner,maintain
a minimum dis tance of 30 cm.
Re versing camera and 360° Camera
R Open the camera co ver with the multimedia
sy stem (/ page 227).
R Use clean water and a soft clo thtoclean the
came ralens. R
Do not use a high-pressure cleaner.
Ta ilpipes
R Clean with a cleaning agent recommended
fo r Mercedes-Benz, especially inthe winter
and af terwa shing theve hicle.
R Do not use acidic cleaning agents.
Tr ailer hitch
R Obse rveth e no tes on care in the trailer hitch
manufacturer's operating instructions.
R Do not clean the ball neck with a high-pres‐
sure cleaner or solvent.
R Remo vetraces of rust on the ball, forex am‐
ple, with a wire brush.
R Remo vedirt with a lint-free clo th.
R After cleaning, lightly oil or grease the ball
head.
% Before using trailers with anti- torsional cou‐
pling, obser vethe manufacturer's operating
instructions. Note
s on care of the interior &
WARNING Risk of injury from plastic
parts breaking off af terth e use of sol‐
ve nt-based care products
Ca reand cleaning products con taining sol‐
ve nts can cause su rfaces in the cockpit to
become porous. When the airbags are
deplo yed, plastic parts may break away. #
Do not use any care or cleaning prod‐
ucts containing sol vents toclean the
cockpit. &
WARNING Risk of injury or death from
bleached seat belts
Bleaching or dyeing seat belts can se verely
we aken them.
This can, forex ample, cause seat belts to
te ar or fail in an accident. #
Never blea chor dye seat belts. To
avo id damage totheve hicle, obser vethefo l‐
lowing no tes on cleaning and care: Maintenance and care
385
Internal use only

If
th e tyre's maximum speed is below that of
th eve hicle, this must be indicated byan
appropriate label in the driver's field of
vision.
R Run in new tyres at moderate speeds forthe
fi rs t10 0 km.
R Replace the tyres af ter six years at the latest,
re ga rdless of wear.
R When replacing with tyres that do not
fe ature run-flat characteristics: vehicles
with MOExtended tyres are not equipped
with a TIREFIT kit at thefa ctor y.Equip the
ve hicle with a TIREFIT kit af terre placing with
tyres that do not feature run-flat characteris‐
tics, e.g. winter tyres.
% You can permanently limit the maximum
ve hicle speed for driving with winter tyres
(/ page 196).
Fo r more information on wheels and tyres, con‐
ta ct a qualified specialist workshop.
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (/ page411) R
Tyre pressure table (/ page412)
R Notes on the emer gency spa rewheel
(/ page 424) Note
s on inter changing wheels &
WARNING Risk of injury thro ugh dif fer‐
ent wheel sizes
Inter changing the front and rear wheels can
se verely impair the driving characteristics.
The disk brakes or wheel suspension compo‐
nents may also be damaged. #
Onlyinter change the front and rear
wheels if the wheels and tyres ha vethe
same dimensions. Inter
changing the front and rear wheels if the
wheels or tyres ha vediffere nt dimensions can
re nder thege neral operating pe rmit in valid.
The wear pat tern s on the front and rear wheels
dif fer:
R front wheels wear more on the tyre shoulder R
rear wheels wear more in the cent reofthe
tyre
Do not drive wi thtyres that ha vetoo little tread
dep th. This significantly reduces traction on wet
ro ads (aquaplaning).
On vehicles with the same front and rear wheel
size, you can inter change the wheels every
5000 to10,000 km, depending on thewe ar.
Ensure the direction of rotation is maintained for
th e wheels.
Obser vethe instructions and saf ety no tes on
"Changing a wheel" when doing so
(/ page 418). Note
s onstoring wheels When
storing wheels, obser vethefo llowing
no tes:
R Afterre moving wheels, store them in a cool,
dry and preferably dark place.
R Protect the tyres from conta ct withoil,
grease or fuel. Wheels and tyres
417
Internal use only

Display messages
Possible causes/consequences and M
MSolutions
5 Engine oil pressure Stop
Switch off engine *D
isplay message only for cer tain engines:
The oil pressure is too lo w.
* NO
TEEngine damage causedbydriving with insuf ficient oil pressure #
Avoid driving with insuf ficient oil pressure. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Consult a qualified specialist workshop.
5 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor has been inter rupte d or the oil le vel sensor is faulty. #
Consult a qualified specialist workshop. Wa
rning and indicator lamps Overview of indicator and
warning lamps Some sy
stems will per form a self-test when the
ignition is switched on. Some indicator and
wa rning lamps may briefly light up or flash. This
behaviour is non-critical. These indicator and wa
rning lamps indicate a malfunction only if they
light up or flash af terth e engine has been star‐
te d or during a journe y.498
Display messages and warning/indicator lamps
Internal use only

Car
wash (care)..........................................3 81
Care 360° camera........................................ .384
Air-water duct........................................ 381
Au tomatic car wash............................... 381
Carpe t.................................................. .385
Decorative foil...................................... .383
Displ ay.................................................. 385
Exterior lighting..................................... 384
High-pressure cleaner........................... 382
Matt finis h............................................. 383
Pa int wo rk.............................................. 383
Plastic trim............................................ 385
Re alwo od/trim elements..................... 385
Re versing camera................................. .384
Ro of lining.............................................3 85
Seat belt............................................... .385
Seat co ver............................................. 385
Senso rs................................................. 384
St eering wheel...................................... 385
Ta ilpipes................................................ 384
Tr ailer hit ch........................................... 384
Wa shing byhand................................... 382
Wheels/rims.........................................3 84
Wi ndo ws................................................ 384 Wi
per blades.........................................3 84
Carpet (Care)............................................ .385
Changing bulbs Dipped beam......................................... 13 6
Fitting/removing co ver (front wheel
ar ch )...................................................... 13 6
Main beam............................................ 13 6
No tes..................................................... 13 5
Opening/closing the side trim panels.. .137
Overview............................................... 13 5
Re versing lights.................................... .137
Tu rn signal light (front).......................... 13 6
Tu rn signal lights (rear).......................... 137
Changing gears
Manually. ............................................... 17 0
Changing hub caps .................................... 419
Changing the lights
Driving abroad (symm etrical low
beam)................................................... .125
Charging Battery (vehicle).................................... 400
USB port................................................ 12 2Chassis
Damping characteristics....................... .218
DY NA MIC BODY CONTROL.................... 218
Child saf ety lock
Re ar door................................................ 70
Re ar side wind ows................................... 71
Child seat App rova l categories................................ .57
At tach ing (no tes).....................................57
Basic instructions.................................... 52
Fr ont passenger seat (no tes)...................68
Fr ont passenger seat (without auto‐
matic airbag shutoff)...............................67
ISOFIX/i-Size (fitting)............................... 61
No tes on risks and dangers..................... 53
Re commended child restra int sy stems.... 56
Seats suitable for belt-secu redch ild
re stra int sy stems..................................... 64
Seats suitable for i‑Size child
re stra int sy stems..................................... 60
Seats suitable for ISOFIX child
re stra int sy stems..................................... 59
Securing on the co-driver seat................69
Secu ring on there ar seat........................ 66
To pTe ther............................................... 63 Index
519
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