lights MERCEDES-BENZ C-CLASS CABRIOLET 2021 Owners Manual

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

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

Yo
u will need toper form certain settings your‐
self. #
Ifth e seat belt pre-tensioning is not reduced,
mo vethe seat backrest back slightl y.
The locking mechanism releases. Fu
nction of PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus) PRE-
SAFE®
PLUS can de tect cer tain impacts,
particular lyan imminent rear impact, and take
pre-em ptive measures toprotect theve hicle
occupants. These measures cannot necessarily
pr eve nt an imminent impact.
PRE-SAFE ®
PLUS can implement thefo llowing
measures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Activating there ar hazard warning lights at a
higher flashing frequenc y.
R Increasing brake pressure when theve hicle
is stationar y.This brake application is cancel‐
led automatically when theve hicle pulls
aw ay. If an accident did not occur,
the pre-em ptive
measures that we retake n are reve rsed.
Sy stem limits
The sy stem will not initiate any action in thefo l‐
lowing situations:
R when reve rsing
or
R when theve hicle is towing a trailer and there
is a risk of a rear impact
The sy stem will not initiate any braking applica‐
tion in thefo llowing situations:
R whilst driving
or
R when entering or exiting a parking space
while using Active Parking Assist Safely transporting
children in theve hicle Alw
ays obser vewhen children are tr avelling
in theve hicle %
Also strictly obser vethe saf ety no tesfo rthe
specific situation. In this wa yyo u can recog‐ nise po
tential risks and avoid dangers if chil‐
dren are tr avelling in theve hicle
(/ page 54).
Be diligent
Bear in mind that negligence when securing a
ch ild in thech ild restra int sy stem may ha veseri‐
ous consequences. Alw ays be diligent in secur‐
ing a child carefully before everyjou rney.
To impr oveprotection forch ildren younger than
12 years old or under 1.50 m in height,
Mercedes-Benz recommends you obse rvethe
fo llowing information:
R Alw ays secure thech ild in a child restra int
sy stem suitable forth is Mercedes-Benz vehi‐
cle.
R The child restra int sy stem must be appropri‐
ate tothe age, weight and size of thech ild.
R The vehicle seat must be suitable forfitting a
ch ild restra int sy stem (/ page 58).
Ac cident statistics show that children secured
on there ar seats are general lysafer than chil‐
dren secured on the front seats. Forth is reason, Occupant saf
ety53

Ac
tivating/deactivating the acoustic lo cking
ve rification signal Multimedia sy
stem:
4 Vehicle 5
î Vehicle settings
5 Acoustic lock #
Activate Oor deacti vate ª the function.
% Please no
te:
The selected setting forth e acoustic locking
ve rification signal must comply wi th there le‐
va nt national road and traf fic re gulations. In
some countri es, including German y,using
th e acoustic locking verification signal is for‐
bidden bytraf fic la ws(in accordance with
§16 Para. 1 and §30 Para. 1 of the German
national road traf fic re gulations). The driver
of theve hicle must comply with these regu‐
lations. In countri es wherethe use of this
function is forbidden, this function is not
activated in theve hicle and must not be acti‐
va ted. Changing
the unlocking settings Po
ssible unlocking functions of theke y:
R Central unlocking
R Unlocking the driver's door and fuel filler flap #
Toswitch between settings: pressthe
Ü andß buttons simultaneously for
appr oximately six seconds until the indicator
lamp flashes twice.
Options if the unlocking function forth e driver's
door and fuel filler flap has been selec ted:
R Tounlo cktheve hicle centrall y:press the
Ü button twice.
R Vehicles with KEYLESS-GO: ifyo uto uch
th e inner sur face of the door handle on the
driver's door, only the driver's door and fuel
fi ller flap are unlo cked. Deactivating
the function of thekey Ve
hicles with KEYLESS-GO: ifyo u deactivate
th e function of theke y,the KEYLESS-GO func‐
tions are also deactivated. Access or drive
au thorization byKEYLESS-GO is then no longer possible with
that particular key.Activate the
function of theke y so that all its functions will
again be available.
Yo u can also deactivate the function of thekey
to reduce the energy consum ption of theke y if
yo u do not use theve hicle or a keyfo r an exten‐
ded pe riod of time. #
Todeactivate: presstheß button on the
ke y twice in quick succession.
The key indicator lamp flashes twice brief ly
and lights up once. #
Toactivate: press any button on thekey.
% When theve hicle is star ted with theke y in
th estow age compartment of the cent recon‐
sole, the function of theke y is automatical ly
activated (/ page139). Opening and closing
73

1
Toadjust the dis tance tothesteering wheel
2 Toadjust the height #
Save the settings with the memory function
(/ page 110). Swi
tching the steering wheel heater on/off Re
quirements:
R The ignition is switched on. #
Turn the le ver in the direction of ar row1or
2.
If indicator lamp 3lights up, thesteering
wheel heater is switched on. When
you swit ch the ignition off, thesteering
wheel heater will switch off. Easy entry and
exitfeature Using
the easy entry and exitfeature &
WARNING Risk of accident when pulling
aw ay during the adjustment process for
th e easy exitfeature
Yo u could lose cont rol of theve hicle. #
Alw ayswa it until the adjustment proc‐
ess is comple tebefore pulling away. &
WARNING Risk of becoming trapped
du ring adjustment of the easy entry and
ex itfeature
Yo u and other vehicle occupants – particu‐
lar lych ildren – could become trapped. #
Ensure that no one has a body part in
th e sweep of thesteering wheel or driv‐
er's seat. Seats and
stowing 107

Exterior lighting
Note
s on adjusting the lights when driving
abroad Ve
hicles with static LED headlamps: It is not
necessa ryto con vert the headlamps. The legal
re qu irements are also met in countries in which
traf fic drives on theot her side of thero ad.
Ve hicles with Intelligent Light Sy stem: before
crossing the border into count ries in which traf‐
fi c drives on theot her side of thero ad, it is nec‐
essary toset the headlamps tosymmetrical low
beam (/ page126).
On ce the headlamps ha vebeen con verted:
R Oncoming tra ffic will not be dazzled.
R The edge of thero ad will not be illuminated
as far or as high.
R The "mo torw ay mode" and "enhanced fog
light" functions will not be available.
The headlamps must be reset toasymm etrical
low beam when youre turn from ab road. Information about lighting sy
stems and your
re sponsibility The
various lighting sy stems of theve hicle are
only aids. The driver of theve hicle is responsible
fo r cor rect vehicle illumination in accordance
with the pr evailing light and visibility conditions,
legal requirements and traf fic situation. Light switch
Ope
rating the light switch 1
W Left-hand pa rking lights
2 X Right-hand parking lights
3 T Standing lights and licence plate light‐
ing
4 Ã Automatic driving lights (prefer red light
switch position) Light and sight
11 9

5
L Low beam/high beam
6 R Switches there ar fog light on/off
When low beam is activated, theT indicator
lamp forth est anding lights will be deactivated
and replaced bytheL low- beam indicator
lamp. #
Alw ays park your vehicle safely using suf fi‐
cient lighting, in acco rdance with there le‐
va nt le galst ipulations.
* NO
TEBattery discharging byoperating
th est anding lights Operating
thest anding lights over a period of
hours puts a stra in on the batter y. #
Where possible, switch on the
ri ght X or left Wparking light. Fo
rve hicles that are wider than two metres or
lon gerth an six metres, sin gle-sided parking
lighting is not permitted in some count ries. In
th is case, thest anding lights are also swit ched
on in the parking lights position. If
th e battery is insuf ficiently charge d, thest and‐
ing lights or parking lights will be swit ched off
automatically tofacilitate the next engine start.
The exterior lighting (e xcept standing and park‐
ing lights) will swit choff automatically when the
driver's door is opened.
R Obser vethe no tes on sur round lighting
(/ page 126).
Au tomatic driving lights function
The standing lights, low beam and daytime run‐
ning lights are switched on au tomatically
depending on the ignition status and the light
conditions. &
WARNING Risk of accident when the
dipped beam is switched off in poor visi‐
bility
When the light switch is set toà ,the
dipped beam may not be switched on auto‐
matically if there is fog, snow or other causes
of poor visibility such as spr ay. #
In such cases, turn the light switch to
L . The automatic driving lights are only an aid.
Yo u
are responsible forve hicle lighting.
Switching there ar fog lights on or off
Re quirements:
R The light switch is in theL orà posi‐
tion. #
Press the R button.
Please obser vethe count ry-specific la wsonthe
use of rear fog lamps. 12 0
Light and sight

Operating
the combination switch for the
lights 1
High beam
2 Turn signal light, right
3 Headlamp flashing
4 Turn signal light, left #
Use the combination switch toactivate the
desired function. Switching on high beam #
Turn the light switch totheL orÃ
position. #
Push the combination switch be yond the
point of resis tance in the direction of ar row
1 .
When the high beam is activated, the indica‐
to r lamp for low beam Lwill be deactiva‐
te d and replaced bythe indicator lamp for
high beam K.
Switching off high beam #
Movethe combination switch back toits
st arting position.
Headla mpflashing #
Pull the combination switch in the direction
of ar row3.
Tu rn signal light #
Toindicate briefl y:push the combination
switch briefly tothe point of resis tance in the
direction of ar row2or4.
The cor responding turn signal light will flash
th re e times. #
Toindicate permanentl y:push the combi‐
nation switch be yond the point of resis tance
in the direction of ar row2or4. Ac
tivating/deactivating the hazard warning
lights #
Press button 1. Light and sight
121