driver seat adjustment 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

also deploy in
theev ent of an accident along
with other sy stems. #
Only one person should use each seat
belt at any one time. Seat belt adjustment function
Ve
hicles with PRE-SAFE ®
:af te r a front seat
belt has been fastened, the automatic seat belt
adjustment may apply a cer tain tigh tening forc e.
Do not hold the seat belt tight lywhile it is
adjusting.
Yo u can activate and deactivate the seat belt
adjustment function using the multimedia sys‐
te m (/ page 43). Ac
tivating/deactivating seat belt adjustment
via the multimedia sy stem Multimedia sy
stem:
4 Vehicle 5
î Vehicle settings
5 Belt adjustment #
Activate Oor deacti vate ª the function. Re
leasing seat belts #
Press there lease button in the seat belt
buckle and guide the seat belt back with the
seat belt tongue. Seat belt
warning function for the driver and
front passen ger The
ü seat belt warning lamp in the instru‐
ment display is a reminder that all vehicle occu‐
pants must weartheir seat belts cor rectly.
In addition, a warning tone may sound.
As soon as the driver and front passenger fasten
th eir seat belts, the seat belt warning goes out. Fu
nction of there ar seat belt status display The
rear seat belt status display is on lyavailable
fo r cer tain countries. When
the ignition is switched on, there ar seat
belt status display informs youfo r a cer tain
amount of time which rear seat belt is not fas‐
te ned.
Yo u can immediately dismiss there ar seat belt
st atus display using the back button on the left-
hand side of thesteering wheel (/ page 228).
If a vehicle occupant unfas tens a seat belt in the
re ar while theve hicle is motion, there ar seat
belt status display appears again.
In addition, a warning tone may sound. In this
case, there ar seat belt status display cannot be
hidden using the back button on the left-hand
side of thesteering wheel. Occupant saf
ety43

&
WARNING Danger of inju ryor death due
to obstructed roll bars
If yo u lea veobjects or items of clo thing on
th e co vers of thero ll bars, thero ll bars can‐
not pr otect as intended.
Fu rthermore, the objects may endanger vehi‐
cle occupants when thero ll bars extend. #
Alw ays make sure that theth ere is
no thing in the sweep of thero ll bars. #
Alw aysstow and secure objects in the
ve hicle cor rectl y. The
roll bars are under the co vers behind the
re ar head restra ints. The roll bars are triggered
when danger of theve hicle rolling over is de tec‐
te d.
Once thero ll bars ha vebeen triggered, you can
no lon ger close a soft topth at is open. In this
case, consult the next qualified specialist work‐
shop. PRE-SAFE
®
sy stem PRE-
SAFE®
(anticipa tory occupant pr otec‐
tion) PRE-
SAFE®
is able todetect cer tain critical driv‐
ing situations and implement pre-em ptive meas‐
ures toprotect theve hicle occupants.
PRE-SAFE ®
can implement thefo llowing meas‐
ures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Closing the side windo ws. R
Vehicles with memory function: movethe
front passenger seat toa more favo urable
seat position.
R Vehicles with multicontour seat: increase
th e air pressure in the seat side bols ters of
th e seat backrest.
R PRE-SAFE ®
Sound: pr ovided that the multi‐
media sy stem is switched on, generates a
brief noise signal tostimulate the innate pro‐
te ctive mechanism of a person's hea ring.
* NO
TEDama gecaused byobjects in the
fo ot we ll or behind the seat The automatic adjustment of
the seat posi‐
tion may result in damage tothe seat and/or
th e object. #
Stow objects in a suitable place. Re
versing the PRE- SAFE®
sy stem measures If an accident did not occur,
the pre-em ptive
measures that we retak en are reve rsed. 52
Occupant saf ety

Seats
Ad
justing the front seat manually and elec‐
trically (without Seat Comfort Package) &
WARNING Risk of becoming trapped if
th e seats are adjus tedby children
Children could become trapped if they adjust
th e seats, particularly when unattended. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Never lea vechildren unat tended in the
ve hicle. Yo
u can adjust the seats when the ignition is
switched off. &
WARNING Risk of becoming trapped
du ring seat adjustment
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the
seat guide rail. #
Make sure when adjusting a seat that
no one has any body parts in the sweep
of the seat. Obser
vethe saf ety no tes on "Airbags" and "Chil‐
dren in theve hicle". &
WARNING Risk of accident due tothe
driver's seat not being engaged
The driver's seat may mo veunexpectedly
while driving.
This could cause youto lose control of the
ve hicle. #
Alw ays make sure that the driver's seat
is engaged before starting theve hicle. &
WARNING Risk of inju ryifve hicle set‐
tings are adjus ted while theve hicle is in
motion
Yo u could lose cont rol of theve hicle in par‐
ticular in thefo llowing situations:
R Ifyo u adjust the driver's seat, the head
re stra ints, thesteering wheel or the mir‐
ro r while theve hicle is in motion.
R Ifyo ufast enyour seat belt while theve hi‐
cle is in motion. #
Before starting the engine: adjust the
driver's seat, head restra ints, steering
wheel and mir ror in particular and fas‐
te nyo ur seat belt. &
WARNING Risk of becoming trapped if
th e seat height is adjus ted carelessly
If yo u adjust the seat height carelessly, you
or other vehicle occupants could be trapped
and thereby injured. 96
Seats and stowing

Children in particular could acciden
tally
press the electrical seat adjustment buttons
and become trapped. #
While moving the seats, make sure that
hands or other body parts do not get
under the le ver assembly of the seat
adjustment sy stem. &
WARNING Risk of inju rydue tohead
re stra ints not being fitted or being adjus‐
te d incor rectly
If head restra ints ha venot been ins talled or
ha ve not been adjus ted cor rectly, there is an
increased risk of injury in the head and neck
area, e.g. in theev ent of an accident or when
braking. #
Alw ays drive with the head restra ints
fi tted. #
Before driving off, ma kesure forev ery
ve hicle occupant that the cent reofthe
head restra int supports the back of the
head at about eye le vel. Do not inter
change the head restra ints of the
front and rear seats. Otherwise, you will not be
able toadjust the height and angle of the head
re stra ints cor rectl y.
Ad just the head restra int fore -and-aft position so
th at it is as close as possible tothe back of your
head. &
WARNING Risk of inju ryor death due to
incor rect seat position
The seat belt will not of ferth e intended le vel
of pr otection if you ha venot mo vedth e seat
backrest toan almost vertical position.
In particular, you may slip under the seatbelt
and injure yourself. #
Adjust the seat proper lybefore begin‐
ning your journe y. #
Alw ays ensure that the seat backrest is
in an almost vertical position and that
th e shoulder section of your seat belt is
ro uted across the cent reofyour shoul‐
der. &
WARNING Risk of inju rydue toexc es‐
sive stra in on the grab handle
If yo u apply your full body weight tothe grab
handle or pull it abruptl y,the grab handle
may be damaged or become loose from its
anchorage. #
Use the grab handles only tostabilise
th e seating position or toassist in get‐
ting in and out of the seat. &
WARNING Risk of inju ryor death due to
objects under the co-driver seat
Objects trapped under the co-driver seat can
inter fere with the function of the automatic
co-driver airbag shutoff or damage the sys‐
te m. #
Do not store any objects under the co-
driver seat. #
When the co-driver seat is occupied,
make sure that no objects are trapped
under the co-driver seat. Seats and
stowing 97

If
th ere is a risk of becoming trapped bythe
st eering wheel: #
Movethe adjustment le ver of thesteer‐
ing wheel.
The adjustment process will be stop‐
ped.
If th ere is a risk of becoming trapped bythe
driver's seat: #
Press the seat adjustment switch.
The adjustment process will be stop‐
ped. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. Yo
u can stop the adjustment process bypress‐
ing one of the memory function position
switches. &
WARNING Risk of becoming trapped if
ch ildren activate the easy entry andexit
fe ature‑
Children could become trapped if they acti‐
va te the easy entry ‑ andexitfeature, particu‐
lar lywhen unat tended. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. If
th e easy entry andexitfeature is active, the
st eering wheel will mo veupwards and the driv‐
er's seat will mo veback in thefo llowing situa‐
tions:
R you swit chthe ignition off with the driver's
door open
R you open the driver's door with the ignition
switched off
% The steering wheel will then mo veupwards
on ly if it is not already as high as it will go.
The driver's seat will then mo vebackwards only if it is not already at
there ar of the seat
adjustment range.
The steering wheel and the driver's seat will
mo veback tothe last drive position in thefo l‐
lowing cases:
R you swit chthe po wer supp lyor the ignition
on when the driver's door is closed
R you close the driver's door with the ignition
switched on
The last drive position will be sa ved when:
R you swit chthe ignition off.
R you sa vethe seat settings via the memory
function.
If yo u press one of the memory function memory
position switches, the adjustment process will
be stopped. 108
Seats and stowing

Setting
the easy entry and exitfeature Multimedia sy
stem:
4 Vehicle 5
î Vehicle settings
5 Easy Entry/Exit #
Select Steer. wheel and seat, Steering wheel
only orOff. Memory function
Fu
nction of the memory function &
WARNING Risk of an accident if the
memory function is used while driving
If yo u use the memory function on the driv‐
er's side while driving, you could lose cont rol
of theve hicle as a result of the adjustments
being made. #
Only use the memory function on the
driver's side when theve hicle is station‐
ar y. &
WARNING Risk of entrapment when
adjusting the seat with the memory func‐
tion
When the memory function adjusts the seat
or steering wheel, you and other vehicle
occupants – particularly children – could
become trapped. #
During the adjusting process of the
memory function, ensure that no body
parts are in the sweep of the seat or
th esteering wheel. #
If somebody becomes trapped, immedi‐
ately release the memory function posi‐
tion button.
The adjustment process is stopped. &
WARNING Risk of entrapment if the
memory function is activated bychildren
Children could become trapped if they acti‐
va te the memory function, particularly when
unattended. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. Yo
u can use the memory function when the igni‐
tion is switched off.
Seat adjustments for up tothre e people can be
st ored and called up using the memory function.
Yo u can sa vesettings forth efo llowing sy stems:
R Seat, backrest and head restra int
R Steering wheel
R Outside mir rors
R Head-up display Seats and
stowing 109

Vo
ice command Function
Scent menu To
display fragrance settings
Energy flow To
display energy flow settings
Ionisation menu To
display ionisation settings
Climate control menu To
display climate control settings
Automatic climate control driver on To
switch on the automatic climate control settings on the driver's side
Light menu To
display light settings
Massage menu To
display massage settings
Massage driver's seat on To
switch on the massage function forth e driver's seat
Massage driver's seat off To
switch off the massage function forth e driver's seat
Outside temperature To
display the outside temp erature
Engine data Displaying engine data
Seats menu To
display seat adjustment settings
Seat heating front passenger level "2" To
set the seat heating forth e front passenger seat toleve l 2 LINGU
ATRO NIC 245

Tr
af fic Sign Assi stCamera view
re stricted See Owner's Manual.............. 461
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ........................ 460
Tr af fic Sign Assi stinope rative ................ 461
Tr ansmission Malfunction Stop............. 450
Ty re press. monitor cur rently una vail‐
able ...................................................... .475
Ty re press. monitor inoperative.............4 75
Ty re press. monitor inoperative No
wheel sensors ........................................ 476
Ty re pressure Check tyres .....................479
Ty re(s) ove rheated................................. 478
Wi thout changing gear, consult work‐
shop......................................................4 50
Display on the windscreen
see Head-up display
Distance control see Active Dis tance Assi stDISTRONIC
DI STRO NIC
see Active Dis tance Assi stDISTRONIC Door
Additional door loc k................................ 75
Locking/unlocking (emergency key)....... 79
Opening (from inside ).............................. 76
Un locking (from inside)............................ 76
Door cont rol panel....................................... 16
Draught stop
Car e...................................................... .367
Dr aw bar
see Tow- bar sy stem
Drive Away Assist ...................................... 218
Drive Away Assist
see Pr otection against collision
Drive position Enga ging................................................1 52
Drive prog ram display ............................... 14 9
Drive prog rams
see DYNA MIC SELECT
Driver's seat see Seat
Driving abroad Light adjustment (low beam)..................1 19Driving saf
ety sy stem
ABS (Anti-lock Braking Sy stem).............1 70
Ac tive Brake Assi st................................ 189
Ad aptive brake lights............................. 174
BA S (Brake Assi stSystem).................... 17 0
Cameras............................................... .168
EBD (Electronic Brake forc e Distribu‐
tion).......................................................1 72
ESP ®
Crosswind Assi st.......................... 171
ESP ®
trailer stabilisation........................ 172
Overview............................................... 16 9
Ra dar and ultrasonic sensor s................ 16 8
Re sponsibility........................................1 68
ST EER CONTROL................................... 172
Driving sy stem
DY NA MIC BODY CONTROL.................... 201
Driving sy stem
see 360° Camera
see Active Blind Spot Assi st
see Active Dis tance Assi stDISTRONIC
see Active Emergency Stop Assist
see Active Lane Keeping Assist
see Active Parking Assist
see Active Speed Limit Assi st
see Active Steering Assist Index
513

Saf
etyve st................................................. 372
Satellite map............................................. 295
SD card Inserting/re moving.............................. .329
Seat 4-waylumbar suppor t............................. 99
Ad justing (electrically)............................ .99
Ad justing (manually and electrically)....... 96
Ad justing (Seat Comfort)........................ .98
Con figuring the settings........................ 101
Cor rect driver's seat position.................. 95
Fo lding back the backrest (rear)............ 11 4
Fo lding the backrest forw ards (rear)...... 11 3
Fo lding the backrest forw ards/back
(with memory function)........................ .102
Fo lding the backrest forw ards/back‐
wa rds (without memory function)..........1 02
Operating the memory function.............1 10
Re setting the settings............................1 02
Setting options........................................ 16
Switching AIRSCARF on/of f.................. 105
Seat belt Activating/deactivating seat belt
adjustment.............................................. 43 Ca
re...................................................... 369
Fa stening................................................. 42
Pr otection................................................ 39
Re ar seat belt status displa y................... 43
Re duced pr otection.................................40
Re leasing................................................ .43
Seat belt adjustment (function)............... 43
Seat belt extende r................................... 41
Wa rning lamp.......................................... 43
Seat belt adju stment
Ac tivating/deactivating........................... 43
Fu nction.................................................. 43
Seat belt extender ....................................... 41
Seat belt tensioners
Ac tivation................................................ 38
Seat belt warning
see Seat belt
Seat co ver (Care)....................................... 369
Seat hea ter
Ac tivating/deactivating......................... 103
Seat ventilation
Switching on/o ff................................... 104Second
telephone
Connecting........................................... .299
Fe atures................................................ 299
Selecting a gear
see Changing gears
Selector le ver
see DIRECT SELECT le ver
Self-test Automatic front passenger front air‐
bag shutoff............................................. .49
Sensors (care) ...........................................3 68
Service see ASS YST PLUS
Service centre see Qualified specialist workshop
Service inter val display
see AS SYST PLUS
Service station sear ch
St arting automatic sear ch..................... 280
Setting a speed see Cruise control
Setting summer time ................................ 257528
Index