2018 MERCEDES-BENZ C-CLASS ESTATE check engine light

Mercedes‑Benz
recommends Mercedes-Benz
care products for cleaning child restra int sys‐
te ms recommended byMercedes-Benz.
Only use child restra int sy stems which are in
proper working condition 000A
WARNING Risk of inju ryor death caused
by the use of damaged child restra int
sy stems
Child restra int sy stems or their retaining sys‐
te ms that ha vebeen subjec tedto a load in
an accident may then not be able toper form
th eir intended pr otective function.
The child cannot be restra ined in theeve nt of
an accident, heavy braking or a sudden
ch ange of direction. 0007
Alw aysre place child restra int sy stems
immediately that ha vebeen damaged or
in vo lved in an accident. 0007
Have the securing sy stems forth ech ild
re stra int sy stems checked at a qualified
specialist workshop before ins talling a
ch ild restra int sy stem again. Av
oiding direct sunlight 000A
WARNING Risk of bu rns when thech ild
seat is exposed todirect sunlight
If th ech ild restra int sy stem is exposed to
direct sunlight or heat, parts could heat up.
Children could suf fer burns on these parts,
particularly on me tallic parts of thech ild
re stra int sy stem. 0007
Alw ays make sure that thech ild
re stra int sy stem is not exposed to
direct sunlight. 0007
Protect it with a blank et,fo rex ample. 0007
Ifth ech ild restra int sy stem has been
ex posed todirect sunlight, allow it to
cool before secu ring a child into it. 0007
Never lea vechildren unat tended in the
ve hicle. Obser
vewhen stopping or parking 000A
WARNING Risk of accident and inju ry
due tochildren left unat tended in the
ve hicle
If yo u lea vechildren unat tended in theve hi‐
cle, they may be able toset theve hicle in
motion, forex ample by:
R releasing the parking brake.
R shifting the automatic transmission out of
park position 005Dor shifting manual trans‐
mission into idle position.
R starting the engine.
In addition, they may operate vehicle equip‐
ment and become trapped. 0007
Never lea vechildren and animals unat‐
te nded in theve hicle. 0007
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle.
This also applies tothe digital vehicle
ke y if the "Digital Vehicle Key" function
is activated via Mercedes me connect. 48
Occupant saf ety

Ad
aptive Highbeam Assist Plus
(0013 page141)
00CB Ma
ximum pe rmissible speed exceeded
(for cer tain countries only)
Ve hicles with Traf fic Sign Assis t:de tected
instructions and traf fic signs (0013 page 256). Ad
justing the in stru ment lighting 0007
Turn brightness control 1up or down.
The lighting of the instrument display and in
th e control elements of theve hicle interior is
adjus ted. Menus and submenus
Fu
nctions on the service menu of the on-
board compu ter On-board computer:
0018 Service 0007
Toselect the function: swipe upwards or
down wards on the left-hand Touch Control. 0007
Press the left-hand Touch Control.
Fu nctions on theService menu:
R Message memory (0013 page 491)
R AdBlue: Adblue ®
ra nge and fill le vel
R Tyres:
- Restart the tyre pressure loss warning
sy stem (0013 page 459)
- Check the tyre pressure with the tyre
pressure monitor (0013 page 453)-
Restart the tyre pressure monitor
(0013 page 454)
R ASSYST PLUS: calls up the service due date
(0013 page 408)
R Vehicles with a widescreen cock pit:Cool-
ant : coolant temp erature display
R Engine oil level: engine oil le vel Calling up
the assistant display On-board computer:
0018 Assistance
The following displa ysare available on the assis‐
ta nt displ aymenu:
R Assis tant displ ay
R Attention le vel (0013 page 254) 0007
Toswitch between the displa ys:swipe
upwards or down wards on the left-hand
To uch Control. 276
Instrument Display and on-board computer

0007
Push the handle 1ofthe bonn etcatch
up wa rds and lift the bonn etby appr oximately
40 cm. 0007
Toclose: lowe rth e bonn etand let it fall from
a height of appr oximately 20 cm. 0007
Ifth e bonn etcan still be lif ted slightl y,open
th e bonn etagain and close it with a little
more forc e until it engages cor rectly. Engine oil
Che
cking the engine oil le vel using the oil
dip stick 000A
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain components in the engine compart‐
ment can be very hot, e.g. the engine, the
ra diator and parts of theex haust sy stem. 0007
Allow the engine tocool down and only
to uch co mponent parts described in the
fo llowing. Plug-in
hybrid: be sure toobser vethe no tes in
th e Supplement. Otherwise, you may failto rec‐
ognise dangers.
Re quirements:
R the engine must ha vean oil dipstic k.If not,
th e engine oil le vel can be checked only with
th e on-board computer (0013 page413).
Depending on the engine, the oil dipstick may be
ins talled in the engine compartment in dif fere nt
locations. The
waiting time before checking the oil le vel
when the engine is at normal operating temp era‐
ture is five minutes. 0007
Park theve hicle on a le vel sur face. 0007
Pull oil dipstick 1out and wipe off. 412
Maintenance and care

000A
WARNING Risk ofexplosion from hydro‐
ge nga s igniting
A battery generates hydrogen gas during the
ch arging process. If there is a short circuit or
spar ksstart toform ,th ere is a danger of the
hy drogen gas igniting. 0007
Make sure that the positive term inal of
th e connected battery does not come
into conta ct withvehicle parts. 0007
Never place me tal objects or tools on a
batter y. 0007
When connecting and disconnecting the
batter y,yo u must obse rveth e descri‐
bed order forth e battery clamps. 0007
When giving starting assis tance, al ways
make sure that you on lyconnect bat‐
te ry term inals with identical polarity. 0007
During starting assis tance, you must
obse rveth e described order for con‐
necting and disconnecting the jump
lead. 0007
Do not connect or disconnect the bat‐
te ry cla mp s while the engine is running. 000A
WARNING Risk ofexplosion during
ch arging process and starting assis tance
During thech arging process and starting
assis tance, the battery may release an explo‐
sive gas mixture. 0007
Avoid fire , naked flames, creating
spar ksand smoking. 0007
Make sure that there is suf ficient venti‐
lation du ring thech arging process and
during starting assis tance. 0007
Do not lean over a batter y. 000A
WARNING Risk ofexplosion from a fro‐
zen battery
A dischar ged battery may freeze at temp era‐
tures slightly abo veor below freezing point.
During starting assis tance or battery charg‐
ing, bat tery gas may be released. 0007
Alw aysth aw a frozen bat tery out first
before charging it or per form ing start‐
ing assis tance. If
th e indicator/warning lamps in the instrument
clus ter do not light up at low temp eratures, it is
ve ry likely that the dischar ged battery has fro‐
zen. In this case you may neither jump-s tart the
ve hicle nor charge the batter y.
The service life of a battery that has been
th awe d may be dramatically shor tened. The
st arting characteristics may be impaired, espe‐
cially at low temp eratures.
It is recommended that you ha veathaw ed bat‐
te ry checked at a qualified specialist workshop.
All vehicles
Plug-in hybrid: obser vethe no tes in the Supple‐
ment. Otherwise, you may failto recognise dan‐
ge rs.
000E NO
TEDama gecaused bynumerous or
ex tended attem ptsto start the engine Nume
rous or extended attem ptsto start the
engine may damage the catalytic con verter
due tonon-combu sted fuel. 0007
Avoid numerous and extended attem pts
to start the engine. 438
Breakdown assis tance

Display messages
Possible causes/consequences and 0050
0050Solutions 0007
Consult a qualified specialist workshop immediatel y.
Active Brake Assist Func-
tions currently limited See
Owner's Manual *
Ve hicles with the Driving Assistance Package: Active Brake Assi stwith cross-traf fic function, Evasi veSteering
Assist or PRE‑SAFE ®
PLUS are temp orarily una vailable or only partially available.
Ve hicles without the Driving Assistance pa ckage: Active Brake Assi stistemp orarily una vailable.
The ambient conditions are outside the sy stem limits (0013 page210). 0007
Drive on.
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again. 0007
Ifth e display message does not disappear, stop theve hicle while paying attention toroad and traf fic conditions
and restart the engine.
0075
Restraint sys. malfunction
Consult workshop *T
herestra int sy stem is faulty (0013 page31). 000A
WARNING Risk of inju ryor fata l injury due toa malfunction in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or
might not be triggered at all in theeve nt of an accident. This may af fect the seat belt tensioner or airbag, for
ex ample. 0007
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. De
tection of a restra int sy stem fault:
R The restra int sy stem warning lamp 0075does not light up when the ignition is switched on.
R The restra int sy stem warning lamp 0075lights up continuously or repeatedly during a journe y.504
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
Suspension warning lam pT here is a fault in theDY NA MIC BODY CONTROL. 0007
Obser vethe messages on the multifunction displa y.
L
Wa rning lamp for dis tance
wa rning function The
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. 0007
Be prepared tobrake immediatel y. 0007
Increase the dis tance.
Fu nction of Active Brake Assi st .Engine
Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
00B9 Engine diagnosis warning
lamp The
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. 0007
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. 554
Display messages and warning/indicator lamps

Cof
fee cup symbol
see ATTENTION ASSIST
Collapsible spare wheel ..........................471
Inflating ............................................... 471
No tes ................................................... 471
COMAND Online see Multimedia sy stem
COMAND Touch
Managing devices ................................ 313
Combination switch ................................13 6
Combined luggage co ver and net
At tach ing tothere ar seat backrest ...... 11 8
Ins talling/ removing ............................. 11 8
Compass .................................................. 347
Compu ter
see On-board computer
Connection status
Displ aying ............................................ 376
Overview ..............................................3 76
Connectivity Swit ching transmission of theve hicle
position on/off .................................... 310Contacts
.................................................. .356
Calling up ............................................ 357
Deleting ............................................... 358
Downloading (from mobile phone) ....... 357
Importing ............................................ 358
Importing (o verview) ............................ 357
Information .......................................... 356
Making a call ...................................... .358
Na me form at ...................................... .357
Options ................................................ 358
St oring ................................................ 358
Controller Operating ............................................ 301
Con venience closing ................................. 88
Con venience opening ................................ 87
Coolant (engine) Check le vel .......................................... 41 5
No tes .................................................. 485
Cooling see Climate control
Co pyright ...................................................29
Cornering light ........................................ .138
Cross Traf fic Alert .................................. .253 Crosswind Assist
Function/no tes ................................... 209
Cruise control .......................................... 216
Ac tivating ............................................ .218
Buttons ................................................ 218
Calling up a speed .............................. .218
Deactivating ......................................... 218
Fu nction ............................................... 216
Re quirements ...................................... 218
Selecting .............................................. 218
Setting a speed .................................... 218
St oring a speed .................................... 218
Sy stem limitations ...............................2 16
Cup holder Rear .................................................... .126
Cup holder in the centre console
In stalling/removing ............................ .125
ins talling/ removing (auto matic
transmission) ....................................... 12 5 D
Damage de tection (pa rked vehicle) .......202
Dashboard see Cockpit 568
Index

Ad
aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .545
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .545
0099 AdBlue sy stem fault Engine
st art not possible ................................ 524
0099 AdBlue sy stem fault Perf.
re duced in XXX km See Owner's
Manual ................................................ 524
0099 AdBlue sy stem fault Perf.
re duced: XXX mph No start in XXX
miles .................................................... 524
0099 AdBlue sy stem fault See Own‐
er's Manual ........................................ .523
00B2Ad d 1 litre engine oil when next
re fuelling ............................................. 522
Apply brake todeselect Park (P)
position ...............................................5 26
Apply brake toselect R ....................... 528 00ADAT
TENTION ASSIST inoperative ...512
00AD ATTENTION ASSIS T:Take a
break! .................................................. 508
0049Au tomatic driving lights inoper‐
ative .................................................... 543
Au xilia rybattery malfunction .............. 526
0044Before starting the engine, turn
th esteering wheel. .............................. 528
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ...................... 506
Blind Spot Assist inope rative ............... 507
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...5 10
Brake immediately ............................... 492
Cannot start engine See Owner's
Manual ................................................ .518
00AF Changekey bat teries .................. 535
004DCheck brake fluid le vel................ 497
Check brake pads See Owner's Man‐
ual ...................................................... .505 00B2Che
ckeng. oil le v.when next
re fuelling ............................................. 522
00CAChe cktrailer hitch lo ck(white
display message) .................................5 37
Check tyre pressures then restart
Ru n Flat Indicator ................................ 533
0077Check tyre(s) ............................... 531
003AClean the fuel filter ...................... 516
Clutch overheated Avoid pulling away
fo r XX:XX mins ................................... .527
00AC Coolant Stop vehicle Switch
engine off ............................................. 51 8
Cruise cont rol and Limiter inope ra‐
tive ....................................................... 513
Cruise cont rol inope rative .................... 513
Cruise cont rol off ................................ .513
0025 currently una vailable See Own‐
er's Manual ........................................ .498
00E5cur rently una vailable See Own‐
er's Manual ........................................ .492 Index
571