light MERCEDES-BENZ C-CLASS CABRIOLET 2021 Owners Manual

Symbols
........................................................ 5At
agl ance .................................................... 6
Cockpit ........................................................... 6
Indica tor and warning lamps (s tandard) ........ 10
Indicator and warning lamps (widesc reen
cockpit) ......................................................... 12
Overhead contro l panel ................................ 14
Door operating unit and seat adjustment ..... 16
Emergencies and breakdowns ...................... 18Digital Owner's Manual
.............................20
Calling up the Digital Owner's Manual ..........20 Genera
l notes............................................. 21
Pr otection of the environment ......................21
Ta ke -ba ckof end-of-life vehicles ...................21
Mercedes-Benz GenuineParts ....................... 22
Owner's Manual ...........................................23
Operating saf ety .......................................... .23
Declaration of conformity ............................. 25
Diagno stics connection ................................ 29
Qualified specialist workshop ....................... 31Ve
hicle registration ....................................... 31
Cor rect use of theve hicle ............................. 31
Information on the REA CHregulation ........... 31
No tesfo r persons with electronic medi‐
cal aids ......................................................... 32
Implied warranty .......................................... .32
QR code forre scue card ...............................33
Data storage .................................................33
Copyright ...................................................... 36 Occupant saf
ety......................................... 37
Re stra int sy stem ...........................................37
Seat belts ..................................................... 39
Airbags ......................................................... 44
Ro ll bar ........................................................ .51
PRE-SAFE ®
sy stem ....................................... 52
Safely transporting children in theve hi‐
cle ................................................................53
No tes on pets in theve hicle .......................... 71 Opening and closing
.................................. 72
Ke y .............................................................. .72
Doo rs............................................................ 75
Boot .............................................................. 80 Soft
top .........................................................81
Side windo ws............................................... 88
Anti-theft pr otection .....................................92 Seats and
stowing ..................................... 95
No tes on the cor rect driver's seat posi‐
tion ............................................................... 95
Seats ............................................................ 96
St eering wheel ............................................ 106
Easy entry and exitfeature ........................ .107
Memory function ........................................1 09
St ow age areas ............................................ .110
Soc kets ....................................................... 11 5
Wi reless charging of the mobile phone
and connection with theex terior aerial .......1 16
Fitting/removing thefloor mats .................. 11 8 Light and sight
.......................................... 11 9
Exterior lighting ........................................... 11 9
Interior lighting ........................................... 12 6
Wi ndsc reen wipers and windscreen
wa sher sy stem ............................................ 127
Mir rors ........................................................ 13 02
Contents

1
Steering wheel gearshift paddles →
15 3
2 Combination swit ch →
121
3 Instrument display →
227
4 DIRECT SELECT le ver →
15 0
5 Media display →
247
6 Glovecompa rtment →
11 2
7 Start/ stop button →
13 8
8 Climate cont rol sy stems →
13 3
9 Calls up the main functions of the multimedia
sy stem →
251
A Hazard warning light sy stem →
121
B PASSENGER AIR BAG indicator lamps →
49
C Stow age compartment →
11 2
D Controller forvo lume and switching sound
on/off →
247
E Switches the multimedia sy stem on/off →
247
F Extends/r etra cts the seat belt extender →
41 G
Opens and closes the soft top →
81
H Activates and deacti vates AIR CAP →
84
I Opens thestow age compartment →
11 2
J Opening and closing the side windo ws →
88
K ECO start/ stop function →
14 6
L 360° camera →
206
M Sets theve hicle le vel →
202
N DYNA MIC SELECT switch →
14 9
O Touchpad →
24 8
P Control panel forth e multimedia sy stem →
228
Q Adjusting thesteering wheel electrically →
106
Switches thesteering wheel heater on/off →
107
R Control panel:
On-board co mputer →
228
Cruise cont rol or variable limiter →
17 7
Ac tive Dis tance Assi stDISTRONIC →
182
S Diagno stics connection →
29 At
aglance – Cockpit 7

T
Opens the bonn et →
356
U Electric parking brake →
16 4
V Light switch →
11 9
W Control panel for: Ac
tive Steering Assist →
187
Ac tive Lane Keeping Assist →
200
Pa rking Assist PARKTRONIC →
213
Head-up display →
231 8
Ataglance – Cockpit

1
L Distance warning →
494
2 Ð Powe rst eering →
488
3 #! Turn signal lights →
121
4 ; Engine diagnostics →
489
5 % Diesel engine: preglow
6 ! Electric pa rking brake (red) →
492
7 J Brakes (red) →
492
8 ÿ Coolant temp erature →
489
9 Coolant temp erature display →
227
A J Brakes (yellow) →
492
B ! Electric pa rking brake (yellow) →
492
C ! ABS →
495 D
6 Restra int sy stem →
487
E ü Seat belt →
487
F K High beam →
121
G L Low beam →
11 9
H 8 Reser vefuel with fuel filler flap location
indicator →
489
I Fuel le vel →
227
J T Standing lights →
11 9
K R Rear fog light →
12 0
L h Tyre pressure monitoring sy stem →
498
M å ESP®
OFF →
495
N ÷ ESP®
→
495 At
aglance – Indicator and warning lamps (s tanda rd) 11

1
#! Turn signal lights →
121
2 R Rear fog light →
12 0
3 K High beam →
121
L Low beam →
11 9
T Standing lights →
11 9
4 ÿ Coolant temp erature →
489
5 Coolant temp erature display →
227
6 L Distance warning →
494
7 ü Seat belt →
487
8 h Tyre pressure monitoring sy stem →
498
9 Ù Powe rst eering →
488
A ! Electric pa rking brake (yellow) →
492
B ! Electric parking brake (red) →
492
C 6 Restra int sy stem →
487 D
ï Trailer hit ch →
488
E J Brakes (red) →
492
F 8 Reser vefuel with fuel filler flap location
indicator →
489
G Fuel le vel →
227
H ä Suspension →
494
I J Brakes (yell ow) →
492
J # Electrical fault →
489
K ; Engine diagnostics →
489
L % Diesel engine: preglow
M ! ABS →
495
N å ESP®
OFF →
495
÷ ESP®
→
495 At
aglance – Indicator and warning lamps (widesc reen cockpit) 13

1
p Switches the left-hand reading lamp
on/off →
12 6
2 c Switches the interior lighting on/off →
12 6
3 | Switches au tomatic interior lighting con‐
trol on/off →
12 6
4 p Switches theright-hand reading lamp
on/off →
12 6 5
Spectacles compa rtment
6 Sun visors
7 ; me button →
313
8 Inside rearview mir ror →
131
9 G SOS button →
313 At
aglance – Overhead control panel 15

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

tion, number of wheel
revo lutions or thefa s‐
te ned seat belts displ ay
R ambient conditions, such as temp erature,
ra in sensor or dis tance sensor
General ly,th e use of these data is temp orar y;
th ey will not be stored be yond the period of
operation and will only be processed within the
ve hicle itself. Control units of ten contain da ta
memories forve hicle keys,fo rex ample. Their
use permits thete mp orary or permanent docu‐
mentation of tech nical information about the
ve hicle's operating state, component loads,
main tenance requ irements and tech nical events
or faults.
Depending on theve hicle equipment, thefo llow‐
ing data are stored:
R operating status of sy stem components,
such as fill le vels, tyre pressure or battery
st atus
R malfunctions or faults in impor tant sy stem
components, such as lights or brakes
R system reactions in special driving situations,
such as airbag deployment or the inter ven‐
tion of stability control sy stems R
information on events leading tovehicle
damage
In cer tain cases, it may be requiredtostore data
th at wo uld ha veotherwise been used only tem‐
poraril y.This may be the case if theve hicle has
de tected a malfunction, forex ample.
If yo u use services, such as repair services and
maintenance work,st ored operational data as
we ll as theve hicle identification number can be
re ad out and used. They can be read out by
service network emplo yees, such as workshops
and manufacturers or third parties, such as
breakdown services. The same is true in the
case of warranty claims and quality assurance
measures.
In general, there adout is per form ed via the
legally prescribed port forth e diagnostics con‐
nection in theve hicle. The operational data that
are read out document tech nical states of the
ve hicle or of individual components and assist in
th e diagnosis of malfunctions, compliance with
wa rranty obligations and quality impr ovement.
To that end, these data, in particular information
about component loads, tech nical events, mal‐ functions and
other faults may be transmitted
along with theve hicle identification number to
th e manufacturer. Furthermore, the manufac‐
turer is subject toproduct liability. Forth is rea‐
son the manufacturer also uses operational data
from theve hicle, forex ample, forre calls. These
da ta can also be used toexamine the cus tom‐
er's warranty and guarantee claims.
Fa ult memories in theve hicle can be reset by a
service outlet or at your requ est as part of repair
or maintenance work.
Con venience and inf otainment functions
Yo u can store con venience settings and individ‐
ual settings in theve hicle and change or reset
th em at any time.
Depending on theve hicle equipment, this
includes thefo llowing settings, forex ample:
R seat and steering wheel positions
R suspension and climate control settings
R individual settings, such as interior lighting
Depending on the selected equipment, you can
import data into vehicle inf otainment functions
yo urself. 34
General no tes

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