2021 MERCEDES-BENZ C-CLASS CABRIOLET air condition

1
Guide line of extern al vehicle dimensions
with outside mir rors folded out
2 Marker of the wheel conta ct points
Sy stem failure
If th ere ve rsing camera is not operational, the
fo llowing message appears in the media display: Sy
stem limits
The 360° Camera will not function or will only
partially function in thefo llowing situations:
R The doors are open.
R The side mir rors are folded in.
R The boot lid is open.
R There is heavy rain, snow or fog.
R The light conditions are poor, e.g. at night.
R Cameras, or vehicle components in which
th e cameras are fitted, are dama ged, dirty or
co vered. Obser vethe information on vehicle
sensors and cameras (/ page168).
Do not use the 360° Camera under such circum‐
st ances. You could otherwise injure others or
collide with objects when parking or manoeu‐
vring theve hicle.
On vehicles with height-adjus table suspension or
if th eve hicle is car rying a heavy load, leaving the
st andard height can result in inaccuracies in the
guide lines and in the display of thege nerated
ima ges, depending on tech nical conditions. %
The contrast of the display may be impaired
by abrupt, direct sunlight or by other light
sources, e.g. when driving out of a garage . In
th is case, pay particular attention.
% Have the display repaired or replaced if, for
ex ample, pixel er rors considerably restrict its
use.
See the no tes on cleaning the 360° Camera
(/ page 368). 208
Driving and parking

Coupling up/uncoupling a trailer
&
WARNING Risk of inju ryfrom theve hicle
le ve l being changed
Ve hicles with le vel control sy stem: the
ve hicle le vel may be changed unin tentional ly,
e.g. by ot her persons. You may become trap‐
ped if you couple up or uncouple a trailer
while theve hicle le vel is changing. In addi‐
tion, other people could become trapped if
th eir limbs are between theve hicle body and
th e tyres or underneath theve hicle.
When coupling up or uncoupling a trailer,
make sure that: #
The doors or tailgate are not opened or
closed. #
You do not initiate the le vel control sys‐
te m and do not operate theDY NA MIC
SELECT switch. #
Do not lock or unlock theve hicle. Re
quirements:
R The ball neck is extended and engaged in a
secu rely loc ked position. Tr
ailers with a 7-pin plug can be connec tedto
th eve hicle with thefo llowing adap ters:
R Adapter plug
R Adapter cable
The trailer will be cor rectly de tected bytheve hi‐
cle only if thefo llowing conditions are me t:
R The trailer is connected cor rectl y.
R The trailer lighting sy stem is in working
order.
The functions of thefo llowing sy stems will be
af fected bya cor rectly connected traile r:
R ESP ®
trailer stabilisation
R Active Lane Keeping Assist
R Parking Assist PARKTRONIC
R Active Parking Assist
R Blind Spot Assist or Active Blind Spot Assi st
R Drive AwayAssi st
R Cross Traf fic Alert
R Reversing camera
R 360° camera R
AIRMATIC
Coupling up a trailer
* NO
TEDama getothest ar ter battery due
to full discharge Charging
the trailer battery using the po wer
supply of the trailer can damage thest ar ter
batter y. #
Do not use theve hicle's po wer supply
to charge the trailer batter y. #
Remo vethe co ver cap from the ball head and
st ore it in a safe place. #
Position the trailer on a le vel sur face behind
th eve hicle and couple it up totheve hicle. 222
Driving and parking

Note
s onthe instrument display and on-
board compu ter &
WARNING Risk of accident due toan
instrument display malfunction
If th e instrument display has failed or mal‐
functioned, the function restrictions applying
to saf etyre leva nt sy stems are not visible.
The operating saf ety of your vehicle may be
impaired. #
Drive on carefull y.#
Have theve hicle checked immediately
at a qualified specialist workshop. &
WARNING Risk of di stra ction from infor‐
mation sy stems and communications
equipment
If yo u operate information and communica‐
tion equipment integ rated in theve hicle
when driving, you will be distracted from the
traf fic situation. This could also cause youto
lose control of theve hicle. #
Only operate this equipment when the
traf fic situation permits. #
Ifyo u cannot be sure of this, stop the
ve hicle whilst paying attention toroad
and traf fic conditions and ope rate the
equipment with theve hicle stationar y. *
NO
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. Yo
u must obse rveth e legal requirements forthe
country in whi chyou are cur rently driving when
operating the on-board computer.
The on-board computer sho wsonly display mes‐
sages and warnings from specific sy stems on
th e multifunction displa y.Yo u must therefore
ensure that your vehicle is alw aysre liable.
If th e operating saf ety of your vehicle is
impaired, park theve hicle immediately and in
accordance with the traf fic conditions. Contact a
qu alified specialist workshop. 226
Instrument display and on-board computer

The
road and traf fic ru les and regulations alw ays
ha ve priority over multimedia sy stem driving
instructions.
The following driving instructions can be used:
R Navigation announcements
R Route guidance displ ays
R Lane recommendations
If yo u do not follow the driving instructions or if
yo u lea vethe calculated route, a new route is
calculated automaticall y.
Driving instructions may di ffer from the actual
ro ad and traf fic conditions if:
R The route is diver ted
R The direction of a one-w aystre et has been
ch anged
Fo rth is reason, you must alw ays obser veroad
and traf fic ru les and regulations during your
journey as well as the pr evailing traf fic condi‐
tions.
The route may dif fer from the ideal route due to
th efo llowing:
R Roadwor ks R
Incomple tedigital map data
Note s on GPS reception
The cor rect function of the navigation sy stem
depends amongst other things on GPS recep‐
tion. In cer tain situations GPS reception can be
impaired, defective or even not possible, e.g. in
tunnels or in multi-s torey car par ks.
Changing direction overview There are
thre e phases when changing direction:
R Preparation phase
Ifth ere is enough time between thech anges
of direction, the multimedia sy stem prepares
yo ufo rth e upcoming change of direction. A
navigation announcement is issued, e.g.
"Prepare toturn right".
The map appears in full-screen mode.
R Announcement phase
The multimedia sy stem announces the
upcoming change of direction, e.g. by
announcing "Turn right in 100 m".
The display is split into two parts. The map is
displa yed on the lef t;on theright, there is a
de tailed image of the junction or a 3D image
of the upcoming change of direction.
R Chan ge-of-direction phase
The multimedia sy stem announces the immi‐
nent change of direction, e.g. byannouncing
"N ow turn right".
The display is split into two parts.
The vehicle has successfully changed direc‐
tion when the light-coloured bar on theright Multimedia sy
stem 281

A CI+ module (Common Inter
face Module),
whi chis not included in the scope of deliver y,is
used todecrypt HD programmes according to
th e CI+ standard. In some countries, an addi‐
tional smart card is requ ired, which is inse rted
into the CI+ module (see the manufacturer's
operating manual).
The TVtuner is in the boot recess. The CI+ mod‐
ule is inse rted into theTV tune r.
* NO
TEDama getothe CI+ module and
Smart Card The CI+ module is designed
for use in the
home. The CI+ module can overheat and be
damaged bycontinuous exposure tohigh
outside temp eratures. #
Make sure that the CI+ module is not
subject tohigh temp eratures forex ten‐
ded pe riods of time.
If th e CI+ module is damaged, no
encryp tedch annels can be recei ved. The
TVtuner can recei veprogrammes in Dolby
Digital Plus. Manufactured under licence from Dolby Labora‐
to
ries. Dolb y,Dol byAudio and the double-D sym‐
bol are trademar ksof Dolby Laboratories.
The TVtuner au tomatically sets theTV standard.
TV reception is dependent on thefo llowing fac‐
to rs:
R Speed
R Characteristics of the selected TVchannel TV
reception may be influenced bythefo llowing
fa ctors:
R Electronic devices whi chare take n into the
ve hicle may impair TVreception.
R The conditions forre ception may change
whilst theve hicle is in motion.
Po or reception conditions can ha vethefo llowing
ef fect:
R The TVtuner switches toan alternative digi‐
ta lch annel with better reception wi th the
same programme content.
R The TVtuner mu testh e sound, freezes the
screen or hides it. The tsymbol appears
in the displa y. Switching
toTV mode Multimedia sy
stem:
4 Media 5
à Media sources #
Select TV.
The TVpicture appears. If available, the
ch annel and prog ramme information is dis‐
pla yed. 344
Multimedia sy stem

fi
ed based on the actual operating conditions
and/or loads.
Examples of arduous operating conditions:
R regular city driving with frequent intermedi‐
ate stops
R mainly short-dis tance driving
R frequent operation in mountainous terrain or
on poor road sur faces
R when the engine is of ten le ftidling for long
periods
R operation in particula rly dusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air filter, engine air cleaner, engine oil
and oil filter etc. changed more frequent ly. The
ty re s must be checked more frequently if the
ve hicle is operated under increased loads. Fur‐
th er information can be obtained at a qualified
specialist workshop. Battery disconnection periods
The ASS
YST PLUS service inter val display can
calculate the service due date only when the
battery is connec ted. #
Notedown the service due date displa yed on
th e instrument display before disconnecting
th e battery (/ page 354). Engine compartment
Ac
tive bonn et(pedestrian pr otection) Operation of
the active bonnet (pedestrian
pr otection)
In cer tain accident situations, the actuation of
th e active bonn etreduces therisk of injury to
pedestrians. The rear area of the bonn etis
ra ised byappr oximately 85 mm.
Fo rth e drive tothewo rkshop, reset the actuated
active bonn etyourself (/ page 355).
Af terth e active bonn ethas been actuated,
pedestrian pr otection may be limited.
Ha ve the full functionality of the active bonn et
re stored in a qualified specialist workshop. Re
setting the active bonnet &
WARNING Risk of bu rns 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. Maintenance and care
355

#
Allow the engine tocool down and only
to uch co mponent parts described in
th efo llowing. &
WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Wi ndsc reen washer concentrate is highly
fl ammable. It could ignite if it comes into
con tact wi thhot engine component parts or
th eex haust sy stem. #
Make sure that no windsc reen washer
concentrate spills out next tothefiller
opening. #
Remo vecap 1bytheta b. #
Top up thewa sher fluid.
% Further information about the windscreen
wa sher fluid (/ page 425) Ke
eping the air-water duct free #
Keep the area between the bonn etand the
windscreen free of deposits, e.g. ice, sn ow
and lea ves. Cleaning and care
Information on
washing theve hicle in a car
wa sh &
WARNING Risk of an accident due to
re duced braking po wer af terwa shing the
ve hicle
Braking ef ficiency is reduced af terwa shing
th eve hicle. #
Afterth eve hicle has been washed,
brake carefully while paying attention to
th e traf fic conditions until braking
po we r has been fully restored. 362
Maintenance and care

R
Tree resin, oils, fuels and greases: remo veby
ru bbing gently wi tha clo thsoaked in petro‐
leum ether or lighter fluid.
R Coolant and brake fluid: remo vewith a damp
clo thand clean water.
R Tarst ains: use tarre mo ver.
R Wax: use silicone remo ver.
R Do not attach sticke rs,fi lms or similar mate‐
ri als.
R Remo vedirt immediately, where possible.
Matt finish
R Only use care products appr ovedfor
Mercedes-Benz.
R Do not polish theve hicle and light-alloy
wheels.
R Only use car washes that cor respond tothe
latest engineering standards.
R Do not use car wash programmes with a final
hot wax treatment.
R Do not use paint cleane rs, buf fing or polish‐
ing products, gloss preser vers, e.g. wax. R
Alw ays ha vepaintwork repairs car ried out at
a qu alified specialist workshop. Note
s on cleaning decorative foils Obser
vethe no tes on matt finish care in the
ch ap ter "No tes on paintwork/matt finish paint‐
wo rkcare" (/ page 364). They also apply to
matt decorative foils.
Obser vethe no tes on cleaning decorative foils to
avo idvehicle damage.
Cleaning R For cleaning, use plenty of water and a mild
cleaning agent without additives or abrasive
subs tances, e.g. a car sha mpoo appr ovedfor
Mercedes-Benz.
R Remo vedirt immediatel y,where possible,
whilst avoiding rubbing too hard. There is
ot herwise a risk of damaging the decorative
fo il ir reparably.
R Ifth ere is dirt on thefinish or if the decora‐
tive foil is dull: use thePa int Cleaner recom‐
mended and appr ovedfo r Mercedes-Benz. R
Insect remains: soak with insect remo ver and
ri nse off the treated areas af terw ards.
R Bird droppings: soak with water and rinse off
af te rw ards.
R Topreve ntwate rst ains, dry a foil-wrapped
ve hicle with a soft, absorbent clo thafter
eve rycar wash.
Av oiding dama getothe decorative foil
R The service life and colouring of decorative
fo ils are impaired by:
- sunlight
- temp erature, e.g. hot air blo wer
- weather conditions
- stone chippings and dirt
- chemical cleaning agents
- oily products
R Do not use polish on matt decorative foil.
Po lishing will ha vethe ef fect of shining the
fo il-wrapped sur face.
R Do not treat matt or stru ctured deco rative
fo ils with wax.Pe rm anent stains may occur. Main
tenance and care 365