2021 MERCEDES-BENZ C-CLASS CABRIOLET radio

Te
ch nical data ........................................... 412
No tes on tech nical da ta.............................. 412
On-board electronics ................................... 412
Re gulatory radio identification of small
components ................................................ 414
Ve hicle identification plate, VIN and
engine number overview ............................ .414
Operating fluids .......................................... 416
Ve hicle data ................................................ 426
Tr ailer hit ch................................................ 427 Displ
aymessages and warning/indi‐
cator lamps .............................................. 430
Display messages ...................................... .430
Wa rning and indicator lamps ...................... 485 Index
......................................................... 5004
Contents

Ve
hicles with a 48 V on-board electrical sy stem
conta in high voltage components. These compo‐
nents are mar ked with a high voltage label: All
workon high voltage components must be
car ried out at a qualified specialist workshop. Declaration of conformity
Electromagnetic compatibility
The electromagnetic compatibility of
theve hicle
components has been checked and certified
according tothe cur rently valid version of Regu‐
lation UN R10. Wire
lessvehicle comp onents Fo
r EU and EF TAcount ries onl y:
The following information applies toall wireless
components of theve hicle and of the informa‐
tion sy stems and communication devices inte‐
grated in theve hicle:
The manufacturers of the wireless components
ensure that all wireless components ins talled in
th eve hicle comply with Directive 20 14/53/EU.
The full texts of the EU declarations of confo rm‐
ity are available at thefo llowing website:
https://moba.i.daimler.com/mar kets/ece-r ow/
baix/cars/certificates-of-conformity/en_GB/
index.html Yo
u can obtain fur ther information from a
Mercedes-Benz service cent re.
Brazil on ly:
No teon the two-w ayradio sy stems in theve hi‐
cle: These sy
stems are not pr otected from harmful
inter fere nce and mu stnot cause inter fere nce in
duly appr oved sy stems.
Nigeria onl y:
Connection and use of the wireless communica‐
tion equipment in this vehicle are permitted by
th e Nigerian Communications Commission.
Thailand onl y:
The telecommunication equipment in this vehicle
meets therequ irements of theNa tional Broad‐
casting and Telecommunications Commission
(NBTC).
Ukraine onl y:
The manufacturer hereby declares that the wire‐
less vehicle components meet thete ch nical reg‐
ulations for two-w ayradios. You can obtain fur‐
th er information from a Mercedes-Benz Service
Centre.
Wire less applications in theve hicle
Besides the typical frequencies for mobile com‐
munications, cars from Mercedes-Benz make
use of thefo llowing automotive radio applica‐
tions: General no
tes25

#
Remo vethe emer gency key ( / page 74). #
Press release knob 2down fully and slide
co ver1 inthe direction of the ar row. #
Fold out co ver1 inthe direction of the
ar row and remo ve. #
Remo vebattery compartment 3and take
out the dischar ged batter y. #
Insert the new battery into battery compart‐
ment 3. Obser vethe positive pole marking
in the battery compartment and on the bat‐
te ry when doing this. #
Push in battery compartment 3. #
Re-attach co ver1 and push it until it
engages. Problems with
theke y,troublesho oting Yo
u can no lon ger lo ckor unlock theve hicle
Po ssible causes:
R The key bat tery iswe ak or dischar ged. #
Check the battery using the indicator lamp
(/ page 72). #
Replace theke y bat tery, if necessary
(/ page 74). #
Use there placement key. #
Use the emer gency keyto lock or unlock
(/ page 79). #
Have theke ych ecked at a qualified specialist
wo rkshop.
There is inter fere nce from a po werful radio
signal source
Po ssible causes if the function of theke y is
impaired:
R high voltage po wer lines R
mobile phones
R electronic devices (no tebooks, tablets)
R shielding due tome tal objects or induction
loops for electrical gatesystems or auto‐
matic bar riers #
Make sure that there is suf ficient di stance
between theke y and the po tential sou rce of
inter fere nce.
Yo u ha velost a key #
Have theke y deacti vated at a qualified spe‐
cialist workshop. #
If necessar y,ha ve the mechanical lock
re placed as well. Doors
Note
s onthe additional door lock The additional door lock is only
available for
ve hicles forth eUni ted Kingdom. Opening and closing
75

If
yo u open the boot lid from outside, the boot lid
is automatically unloc ked. Problems with KEYLESS-GO, troubleshooting
Yo
u can no lon ger lo ckor unlock theve hicle
using KEYLESS-GO
Po ssible causes:
R The function of theke y has been deacti vated.
R The key bat tery iswe ak or dischar ged. #
Activate the function of theke y ( / page 73). #
Check the battery using the indicator lamp
(/ page 72). #
Replace theke y bat tery, if necessary
(/ page 74). #
Use there placement key. #
Use the emer gency keyto lock or unlock
(/ page 79). #
Have theve hicle and keych ecked at a quali‐
fi ed specialist workshop. There is inter
fere nce from a po werful radio
signal source
Po ssible causes if the function of KEYLESS-GO is
impaired:
R high voltage po wer lines
R mobile phones
R electronic devices (no tebooks, tablets)
R shielding due tome tal objects or induction
loops for electrical gatesystems or auto‐
matic bar riers #
Make sure that there is suf ficient di stance
between theke y and the po tential sou rce of
inter fere nce. Ac
tivating/deactivating the automatic lo ck‐
ing feature The
vehicle is loc ked automatically when the
ignition is switched on and the wheels are turn‐
ing fast erthan walking pace. #
Toactivate: press and hold button 2for
appr oximately five seconds until an acoustic
signal sounds. #
Todeactivate: press and hold button 1for
appr oximately five seconds until an acoustic
signal sounds. 78
Opening and closing

7
Selected transmission position
8 Multifunction displ ay(exa mp le:standard dis‐
play for a trip): assi stance / telephone /
navigation / trip / media / radio / styles
and displa ys/ service / possible settings
fo r head-up display
9 Fuel le vel and fuel filler flap location indica‐
tor Overview of buttons on
thest eering wheel 1
P Back/Home button (press and hold),
on-board computer
2 Touch Control, on-board co mputer
3 Control panel for cruise control/limiter or
Ac tive Dis tance Assi stDISTRONIC
4 Control panel forth e multimedia sy stem
£ LINGU ATRO NIC (/ page 232) 5
ò Tocall up the home screen of the mul‐
timedia sy stem
6 Touch Control multimedia sy stem
7 % Back button (multimedia sy stem)
8 Brightness control toadjust the lighting in
th e Instrument Display and in the control
elements of theve hicle interior Operating
the on-boa rdcompu ter
Obser vethe legal requ irements forth e count ry
in which you are cur rently driving when operat‐
ing the on-board computer. 228
Instrument display and on-board computer

The on-board computer is operated using
the
left-hand Touch Control and the left-hand back/
home button.
When the on-board computer is being operated,
dif fere nt acoustic signals will sound as operating
fe edbac k,e.g. when the end of a list is reached
or when you are sc rolling thro ugh a list.
The following menus are available:
R Service
R Assistance
R Trip
R Navigation
R Radio
R Media
R Telephone
R HUD
R Vehicles with an instrument display in
th e widescreen cockpit: Design
% You can find information about the possible
settings and selections on the menus in the
Digital Owner's Manual. #
Tocall up the menu bar: pressthe left-hand
back button until the menu bar is displa yed.
% Press theò button tocall up the menu
bar of the on-board computer. #
Toscroll on the menu bar: swipe left or
ri ght on the left-hand Touch Control. #
Tocall up a menu, submenu or possible
settings on the menu, or confirm a selec‐
tion or setting: pressthe left-hand Touch
Control. #
Toscroll through displa ysor lists on the
menu, or select display content, a func‐
tion, an entry or a displa y:swipe upwards
or down wards on the left-hand Touch Con‐
trol. #
Toswitch between displa ys:swipe
upwards or down wards on the left-hand
To uch Control. #
Toexit a submenu: pressthe left-hand back
button.
Fu ll-screen menus
Yo u can displ aythefo llowing menus full-screen
on the instrument display: R
Assistance
R Trip #
Onthe cor responding menu, use the left-
hand Touch Control toscroll tothe end of the
list. #
Press the left-hand Touch Control.
The selected menu will be displ ayed full-
screen. Overview of displa
yson the multifunction
display
Displa yson the multifunction display:
ë Active Parking Assist activated
(/ page 215)
é Parking Assist PARKTRONIC deacti vated
( / page 213)
¯ Cruise
control (/ page 176)
È Limi
ter (/ page177)
ç Active Dis tance Assi stDISTRONIC
(/ page 179)
æ Ac
tive Brake Assi st (/ page 193) In
stru ment display and on-board computer 229

1
Press therock er switch up: £starts LIN‐
GU ATRO NIC
2 Press the control: 8switches the sound
off or on (ends LINGU ATRO NIC)
Tu rn the control up/down: increases/
decreases thevo lume 3
Press therock er switch up: 6makes/
accepts a call
Press therock er switch down: ~rejects/
ends a call (ends LINGU ATRO NIC) Conducting a dialogue with LINGU
ATRO NIC #
Tostart or continue a dialogue: onthe
multifunction steering wheel, press the£
rock er switch up.
Yo u can say a voice command af ter an
acou stic signal. #
Tocor rect an ent ry:say theCorrection
vo ice command. #
Toselect an entry from the selection lis t:
say the line number or the conte nts. #
Tobrows eth e selection lis t:say theNext
or Back voice command. #
Tointer rupt the dialogue: saythePause
vo ice command. #
Tocancel the dialogue: saytheCancel
vo ice command. Operable functions
Yo
u can use the LINGU ATRO NIC voice control
sy stem tooperate thefo llowing equipment
depending on thefe atures:
R Telephone
R Text messa ges
R Navigation
R Address book
R Radio
R Audio (memory card, Media Inter face, USB
and Blu etoo th®
audio)
R TV
R Vehicle Overview of types of
voice command A distinction is made between
thefo llowing
vo ice commands:
R Global voice commands can be said at any
time and rega rdless of the cur rent applica‐
tion, e.g. thevo ice commands Navigate to,
Call orText message to. LINGU
ATRO NIC 233

Essential
voice commands Overview of switch
voice commands Swit
chvoice commands can be used toopen
cer tain applications. The voice command selec‐ tion can be used
rega rdless of the application
th at is cur rently acti ve.
Switch voice commands Vo
ice command Function
Navigation To
switch tonavigation mode
Map To
switch tomap display
Address book To
switch toaddress book
Telephone To
switch totelephone mode
Text message To
switch totext messa ges
Radio To
switch toradio mode
TV To
switch toTV mode
Media To
switch tomedia mode
USB To
switch toUSB LINGU
ATRO NIC 235