2021 MERCEDES-BENZ C-CLASS CABRIOLET warning

1
B-pillar wi th:
QR code for accessing there scue card →
33
2 Safetyve sts →
372
3 me button and SOS button →
313
4 Tocheck and top up operating fluids →
416
5 Totow- start and tow aw ay →
386
6 Flat tyre →
374
7 Starting assis tance →
384
8 Haza rdwa rning light sy stem →
121 9
Fire extinguisher →
373
A Fuelfiller flap with:
information label on fuel type →
15 5
information label on tyre pressure →
397
QR code for accessing there scue card →
33
B Totow- start and tow aw ay →
386
C TIREFIT kit →
376
D First-aid kit (so ftsided) →
373
E Warning triangle →
372 At
aglance – Emer gencies and breakdowns 19

Calling up
the Digital Owner's Manual
Multimedia sy stem:
4 Vehicle 5
Õ Owner's Manual #
Select a menu item.
In addition, you can also call up the Owner's
Manual within a main function (e.g. via Informa-
tion on media).
The Digital Owner's Manual describes the func‐
tion and operation of theve hicle and the multi‐
media sy stem.
Fo r saf etyre asons, the Digital Owner's Manual is
deactivated while driving. The Digital Owner's Manual conta
insthefo llow‐
ing menu items:
R Search: allo wsyouto sear chprecisely for
ke ywords.
R Quick start: pr ovides you with important
information so that you can start using your
ve hicle immediately.
R Tips: pr ovides tips on how touse your vehicle
in cer tain situations.
R Messages : provides you with fur ther informa‐
tion about the messages in the instrument
clus ter.
R Bookmarks : provides you with a list of all the
bookmar ksyou ha vestored yourself. 1
Picture
2 Menu
3 Navigation window
Some sections of the Digital Owner's Manual,
such as warnings, can be made visible byhigh‐
lighting and pressing them. 20
Digital Owner's Manual

Alw
ays specify theve hicle identification number
(VIN) (/ page414) when ordering Mercedes-
Benz GenuineParts. Owner's Manual
This Owner's Manual describes all models and
all standard and optional equipment available for
yo ur vehicle at the time of this Owner's Manual
going topress. Countr y-specific dif fere nces are
possible. No tethat your vehicle may not be fit‐
te d with all features desc ribed. This is also the
case for sy stems and functions releva nt to
saf ety. Therefore, the equipment on your vehicle
may dif fer from that in the descriptions and illus‐
trations.
The original pur chase ag reement foryo ur vehicle
contains a list of all of the sy stems in your vehi‐
cle.
Should you ha veany questions concerning
equipment and operation, please consult a
Mercedes-Benz Service Centre.
The Owner's Manual and Service Booklet are
impor tant documents and should be kept inthe
ve hicle. Operating saf
ety &
WARNING Risk of inju rydue tomalfunc‐
tions or sy stem failure
In order toavo id malfunctions or sy stem fail‐
ures: #
Alw ays ha vethe specified service/
maintenance workas well as any nec‐
essary repairs car ried out at a qualified
specialist workshop. &
WARNING Risk of accident or inju rydue
to improper modifications toelectronic
components
Modifications toelectronic components,
th eir software or wiring can impair their func‐
tionality and/or the functionality of other
networ ked components or saf ety-re leva nt
sy stems.
This can endanger theve hicle's operating
saf ety. #
You must not tamp er with wiring, elec‐
tronic components, or their software. #
Alw ays ha vewo rkon electrical and
electronic devices car ried out at a quali‐
fi ed specialist workshop. If
yo u modify the on-board electronics, thege n‐
eral operating pe rmit is rende red in valid.
Obser vethe "On-board electronics" section in
"Technical data". &
WARNING Risk offire due toflammable
materials on hot parts of theex haust
sy stem
Flammable material such as lea ves, grass or
twigs may ignite if they come into contact
wi th hot parts of theex haust sy stem. #
When driving on unpa vedro ads or off-
ro ad, regular lych eck theve hicle under‐
side. #
Remo vetrapped plants or other flam‐
mable material, in particular. Gene
ral no tes 23

&
WARNING Risk of accident due tocon‐
necting devices tothe diagnostics con‐
nection
If yo u connect devices tothe diagnostics
connection of theve hicle, the function of
ve hicle sy stems and operating saf ety may be
impaired. #
For saf etyre asons, werecommend that
yo u on lyuse and connect products
appr ovedby yo ur Mercedes-Benz
service centre. &
WARNING Risk of accident due to
objects in the driver's foot we ll
Objects in the driver's foot we ll may impede
pedal tr avel or block a depressed pedal.
This jeopardises the operating and road
saf ety of theve hicle. #
Stow all objects in theve hicle securely
so that they cannot getinto the driver's
fo ot we ll. #
Alw aysfit th efloor mats securely and
as prescribed in order toensure that th
ere is alw ays suf ficient room forthe
pedals. #
Do not use loose floor mats and do not
place floor mats on top of one ano ther. *
NO
TEBattery discharging from using
devices connected tothe diagnostics
connection Using devices at
the diagnostics connection
drains the batter y. #
Check thech arge leve l of the batter y. #
Ifth ech arge leve l is lo w,charge the
batter y,e.g. bydriving a considerable
dis tance. Please also no
tethe information about the12 V
battery and short-dis tance trips in the "Driving
and Parking" chap ter (/ page142). Connecting and using ano
ther device with the
diagnostics connection can ha vethefo llowing
ef fects:
R malfunctions in theve hicle sy stem
R permanent damage tovehicle components
Please referto thewa rranty term s and condi‐
tions forth is matter. 30
General no tes

Moreo
ver,connecting equipment tothe diagnos‐
tics connection can lead toemissions monitor‐
ing information being reset, forex ample. This
may lead totheve hicle failing tomeet the
re qu irements of the next emissions inspection
during the main inspection. Qualified specialist
workshop
A qu alified specialist workshop has the neces‐
sary special skills, tools and qualifications to
cor rectly car ryout any necessary workon your
ve hicle. This particularly applies tosaf ety-re le‐
va nt wo rks.
Alw ays ha vethefo llowing workcar ried out on
yo ur vehicle at a qualified specialist workshop:
R safety-re leva nt wo rks
R service and maintenance work
R repair work
R modifications as well as ins tallations and
con versions
R workon electronic components R
vehicles with 48 V on-board electrical
sy stem (EQ boost tech nology): workon
high voltage components of the 48 V on-
board electrical sy stem
Mercedes‑Benz recommends a Mercedes‑Benz
service centre. Ve
hicle registration
Mercedes-Benz may ask its service centres to
car ryout tech nical inspections on cer tain vehi‐
cles. The quality or saf ety of theve hicle is
impr oved as a result of the inspection.
Mercedes-Benz can only inform you about vehi‐
cle checks if Mercedes-Benz has your registra‐
tion data.
It is possible that your vehicle has not yet been
re gis tere d in your name in thefo llowing cases:
R ifyo ur vehicle was not pur chased at an
authorised specialist dealer.
R ifyo ur vehicle has not yet been examined at
a Mercedes-Benz service centre. It is advisable
toregis teryo ur vehicle with a
Mercedes-Benz service centre.
Inform Mercedes-Benz as soon as possible
about any change in address or vehicle owner‐
ship. You can do this at a Mercedes-Benz service
centre, forex ample. Cor
rect use of theve hicle
If yo ure mo veany warning sticke rs,yo u or others
could failto recognise cer tain dangers. Lea ve
wa rning sticke rs in position.
Obser vethefo llowing information in particular
when driving your vehicle:
R the saf ety no tes in this manual
R tech nical da taforth eve hicle
R traf fic ru les and regulations
R laws and saf etyst andards per taining to
mo torve hicles Information on
the REACH regulation
EU and EFTA countries onl y: Gene
ral no tes 31

th
e REA CHregulation (Regulation (EC) No.
19 07 /2006, Article 33) stipulates a duty tosup‐
ply information about subs tances of very high
concern (SVHCs).
Mercedes‑Benz AGacts tothe best of its know l‐
edge toprev ent these SVHCs from being used
and toenable cus tomers tosafely handle these
subs tances. The reare SVHCs known to
Mercedes‑Benz AG, according tosupplier infor‐
mation and internal product information, found
in individual co mponents of this vehicle in quan‐
tities of over 0.1 percent byweight.
Fu rther information can be obtained at thefo l‐
lowing addresses:
R https://reach.daimler.com/de/home/
R https://reach.daimler.com/en/home/ Note
sfo r persons with electronic medical
aids
Me rcedes-Benz AGcannot, despi tecarefully
de veloping vehicle sy stems, comple tely rule out
th e interaction of vehicle sy stems with electronic
medical aids such as cardiac pacemakers. In addition,
there are components ins talled in
th eve hicle that, rega rdless of the operating sta‐
tus of theve hicle, can generate magnetic fields
on a par with permanent magnets. These fields
can be found, forex ample, in the area around
th e multimedia and sound sy stem or also in the
area of the seats, depending on theve hicle
equipment.
Fo rth is reason, thefo llowing can occur in isola‐
te d cases, depending on the aids used:
R Medical aids malfunctioning
R Adverse health ef fects
Obser vethe no tes and warnings of the manufac‐
turer of the medical aids; if in doubt, conta ctthe
device manufacturer and/or your doc tor.If th ere
is continuing uncer tainty concerning the possi‐
bility of medical aids malfunctioning, Mercedes-
Benz AGrecommends using only few electrical
ve hicle sy stems and/or maintaining a dis tance
from the components.
Only ha verepairs and maintenance workinthe
area of thefo llowing components car ried out by
a qu alified specialist workshop:
R vehicle components car rying live voltage R
transmission aerials
R multimedia sy stem and sound sy stem
If yo u ha veany queries or suggestions, consult a
qu alified specialist workshop. Implied
warranty
* NO
TEDama getotheve hicle arising
from violation of these operating instruc‐
tions. Damage
totheve hicle can arise from viola‐
tion of these operating instructions.
This damage is not co vered either bythe
Mercedes-Benz implied warranty or bythe
New‑ or Used- Vehicle Warrant y. #
Follow the instructions in these operat‐
ing instructions on proper operation of
yo ur vehicle as well as on possible vehi‐
cle damage. 32
General no tes

Re
stra int sy stem Pr
otection pr ovided bythere stra int sy stem The
restra int sy stem includes thefo llowing com‐
ponents:
R Seat belt sy stem
R Airbags
R Child restra int sy stem
R Child seat securing sy stems
The restra int sy stem can help pr eventtheve hi‐
cle occupants from coming into contact with
parts of theve hicle interior in theev ent of an
accident. In theev ent of an accident, the
re stra int sy stem can also reduce thefo rc es to
which theve hicle occupants are subjected.
A seat belt can only pr ovide the best le vel of pro‐
te ction if it is worncor rectl y.Depending on the
de tected accident situation, seat belt tensioners
and/or airbags supplement the pr otection
of fere dby a cor rectly wornseat belt. Seat belt
te nsioners and/or airbags are not depl oyed in
eve ryaccident. In order
forth ere stra int sy stem toprov ide the
intended le vel of pr otection, each vehicle occu‐
pant must obser vethefo llowing information:
R Fasten seat belts cor rectl y.
R Sit in an almost up right seat position with
th eir back against the seat backrest.
R Sit with their feet resting on thefloor, if pos‐
sible.
R Alw ays secure persons under 1.50 m tall in
an additional restra int sy stem suitable for
Mercedes-Benz vehicles.
Ho wever,no sy stem available today can com‐
ple tely elimin ate injuries and fata lities in every
accident situation. In particular, the seat belt
and airbag generally do not pr otect against
objects penetrating theve hicle from the outside.
It is also not possible tocompl etely rule out the
ri sk of injury caused bythe airbag deploying. Re
duced restra int sy stem pr otection &
WARNING Risk of inju ryor death due to
modifications tothere stra int sy stem
Ve hicle occupants may no longer be pr otec‐
te d as intended if alterations are made tothe
re stra int sy stem. #
Never alter the parts of there stra int
sy stem. #
Neverta mp er with the wiring or any
electronic component parts or their
software. If it is necessary
tomodify theve hicle toaccom‐
modate a person with disabilities, con tact a
qu alified specialist workshop.
Mercedes-Benz recommends that you use driv‐
ing aids which ha vebeen appr ovedfo ryo ur vehi‐
cle byMercedes-Benz. Re
stra int sy stem functionality When
the ignition is switched on, a self-test is
per form ed, during which the6 restra int sys‐ Occupant saf
ety37

te
m wa rning lamp lights up. It goes out no later
th an a few seconds af terth eve hicle is star ted.
The components of there stra int sy stem are then
functional. Malfunctioning
restra int sy stem A malfunction has occur
red in there stra int sys‐
te m if:
R the6 restra int sy stem warning lamp does
not light up when the ignition is switched on
R the6 restra int sy stem warning lamp
lights up continuously or repeatedly during a
journey &
WARNING Risk of inju rydue tomalfunc‐
tions in there stra int sy stem
Components in there stra int sy stem may be
activated unintentionally or not deploy as
intended in an accident. #
Have there stra int sy stem checked and
re paired immediately at a qualified spe‐
cialist workshop. Fu
nction of there stra int sy stem in an acci‐
dent How
there stra int sy stem works is de term ined by
th e se verity of the impact de tected and the type
of accident anticipated:
R Frontal impact
R Rear impact
R Side impact
R Rollover
The activation thre sholds forth e components of
th ere stra int sy stem are de term ined based on
th eev aluation of the sensor values measured at
va rious points in theve hicle. This process is pre-
em ptive in nature. The triggering/deployment of
th e components of there stra int sy stem must
ta ke place in good time at thest art of the colli‐
sion.
Fa ctors whi chcan only be seen and measu red
af te r a collision has occur red do not play a deci‐
sive role in the deployment of an airbag. Nordo
th ey prov ide an indication of airbag deployment.
The vehicle may be deformed significantly with‐
out an airbag being deplo yed. This is the case if only parts which are
relatively easily deformed
are af fected and thera te ofvehicle deceleration
is not high. Con versely, an airbag may be
deplo yedev en though theve hicle suf fers only
minor deformation. If very rigid vehicle parts
such as longitudinal members are hit, this may
re sult in suf ficiently high le vels of vehicle decel‐
eration.
Depending on the de tected deployment situa‐
tion, the components of there stra int sy stem can
be activated or deplo yed independently of each
ot her:
R Seat belt tensioner: frontal impact, rear
impact, side impact, rollo ver
R Driver's airbag, front passenger airbag: fron‐
talimpact
R Knee airbag: frontal impact
R Side airbag: side impact
R Head airbag: side impact, rollo ver,frontal
impact
The front passenger airbag can only be depl oyed
in an accident if thePA SSENGER AIR BAG OFF
indicator lamp is off. If the front passenger seat 38
Occupant saf ety