2021 MERCEDES-BENZ C-CLASS CABRIOLET key

Wi
-Fi Wi
-Fi connection overview
Yo u can use Wi-Fi toestablish a connection with
a Wi -Fi network and toaccess the Internet or
ot her network devices.
The following connection options are available:
R Wi-Fi connection
The Wi-Fi connection toaWi -Fi-capable
device, e.g. the cus tomer's mobile phone or
a ta blet PC is es tablished.
R Multimedia sy stem as a Wi-Fi hotspot
Using this function, a tablet PC or no tebook
can be connec ted, forex ample.
To establish a connection, you can use thefo l‐
lowing me thods:
R WPS PIN
The connection toa secure Wi-Fi network is
made via a PIN.
R WPS PBC
The connection toa secure Wi-Fi network is
made bypressing a button (push button).
R Security key The connection
toa secure Wi-Fi network is
made via a secu rity key.
Setting up Wi-Fi
Requ irements:
R The device tobe connec ted supports one of
th eth re e means of connection described
(/ page 259).
Multimedia sy stem:
4 System 5
ö Connectivity
Ac tivating/deactivating Wi-Fi #
Switch Wi-FionO or off ª.
If Wi-Fi is deactivated ª, communication via
Wi -Fi toall devices is inter rupte d. This also
means that a connection tothe HERMES
communication module cann otbe es tab‐
lished. Then functions such as dynamic route
guidance with Live Traf fic Information are not
av ailable.
Connecting the multimedia sy stem with a
device via Wi-Fi
This function is not available if a HERMES com‐
munication module is ins talled. The type of connection es
tablished must be
selected on the multimedia sy stem and on the
device tobe connec ted.
% The connection procedure may dif fer
depending on the device. Follow the instruc‐
tions that are shown in the displa y.Fu rther
information (see the manufacturer's operat‐
ing instructions). #
Select Internet settings . #
Select Search for Wi-Fi networks.
Using a security key #
Select a Wi-Fi network in the list. #
Have the security key displa yed on the device
to be connec ted (see the manufacturer's
operating instructions). #
Ente rth is security key on the multimedia sys‐
te m. #
Confirm the entry with¡.
% All devices support a security key as a
means of connection. Multimedia sy
stem 259

#
Select Continue inthe multimedia sy stem.
Connecting using a security key#
Select Connect device to vehicle hotspot .
A secu rity key is displa yed. #
Select theve hicle from the device tobe con‐
nec ted. The vehicle is displa yed with the
SSID MB Hotspot XXXXX .#
Enter the security key which is shown in the
media display on the device tobe connec ted. #
Confirm the entry.
Connecting using NFC #
Select Establish a connection via NFC. #
Activate NFC on the mobile device (see the
manufacturer's operating instructions). #
Bring the mobile device into the NFC area of
th eve hicle (/ page 301). #
Select Done.
The mobile device is now connected tothe
multimedia sy stem hotspot via NFC.
Generating a new security key: #
Select Set up hotspot . #
Select Generate security key .
A connection will be es tablished with the
newly crea ted security key. #
Tosave a security key:select Save.
When a new security key is sa ved, all existing
Wi -Fi connections are then disconnected. If
th eWi -Fi connections are being re-es tab‐
lished, the new security key must be en tere d. Managing COMAND
Touch devices Re
quirements:
R The COMAND Touch app is ins talled on the
ex tern al device (e.g. tablet or smartphone).
R Wi-Fi is acti vated (/ page 259) and the mul‐
timedia sy stem is confi gured as a Wi-Fi hot‐
spot (/ page 260).
Multimedia sy stem:
4 System 5
COMAND Touch
Connecting and authorising a new device #
Select Authorise a new device. #
Select Connect new device. #
Ente rth e security key in theex tern al device.
The Please start COMAND Touch on your
device and follow the instructions. message
appears. #
Select Continue. #
The connection requ est from the device
Accept. #
Ente rth e PIN shown on theex tern al device.
The device is authorised.
Au thorising a connected device #
Select Authorise a new device.
The devices already connec ted are displa yed. #
Select Continue using connected devices.
The Please start COMAND Touch on your
device and follow the instructions. message
appears. #
Select Continue. #
The connection requ est from the device
Accept. #
Ente rth e PIN shown on theex tern al device.
The device is authorised. Multimedia sy
stem 261

Ad
justing the call and ringtone volume
Multimedia sy stem:
4 System 5
õ Audio 5
Telephone #
Select Speech volume orRingtone volume .#
Set thevo lume.
St arting or stopping mobile phone voice rec‐
ognition
Re quirements:
R The mobile phone is connec tedto the multi‐
media sy stem (/ page 298).
St arting mobile phone voice recognition #
Press and hold theó button on the multi‐
function steering wheel for more than one
second.
Yo u can use mobile phone voice recognition.
St opping mobile phone voice recognition #
Press the8 or~ button on the multi‐
function steering wheel. Calls
Te
lephone operation
Multimedia sy stem:
4 Telephone 5
ª Contacts
Making a call #
Select Numerical keypad. #
Ente rth e number. #
Select w.
The call is made.
Ac cepting a call #
Select Accept .
Re jecting a call #
Select Reject.
No ting an incoming call in "In-Car Of fice" #
If "In-Car Of fice" is available: select
Reminder (/page 308).
Ending a call #
Select =. Ac
tivating functions during a call #
Toshow all functions, navigate down.
The following functions are available during a
call:
R End call
R Make additional call
R Keyboard (showtosend DTMF tones)
R Switch Mute mic onO or off ª.
R Private mode (an activecall in hands-free
mode is transfer redove rto thete lephone)
Conducting calls with se veral participants
Requ irements:
R There is an active call (/ page 302).
R Another call is being made.
Switching between calls #
Select call #.
The selected call is active. The other call is
on hold.
Ac tivating or ending a call on hold #
Select Continue call orEnd call. 302
Multimedia sy stem

#
Todeactivate full-sc reen mode: pressthe
to uchpad.
Changing video settings
Multimedia sy stem:
4 Media 5
Z Options
5 Picture format
The following picture form ats are available:
R Automatic
R 16:9
R 4:3
R Zoom #
Select a picture form at.
Ad justing the brightness manually
If th eAutomatic pictureform at is swit ched off,
yo u can adjust the brightness yourself. #
Select Brightness. #
Adjust the brightness. Media sear
ch St
arting the media sear ch
Multimedia sy stem:
4 Media 5
ª Search
Depending on the connected media sources and
fi les, thefo llowing categories are lis ted:
R Current track list
R Keyword search
R Playlists
R Artists
R Albums
R Tracks
R Folders
R Music genres
R Year
R Composers
R Videos
R Podcasts (Apple®
devices)
R Audiobooks (Apple®
devices) #
Select a categor y. %
The categories are available as soon as the
entire media conte nt has beenread in and
anal ysed. Media Inter
face Information about
the Media Inter face
Media In terface is a universal inter face forthe
connection of mobile audio equipment. The mul‐
timedia sy stem has two USB ports. The USB
ports are located in thestow age compartment
under the armrest.
Suppor ted devices
The Media Inter face allo wsyouto connect the
fo llowing data storage media:
R iPod ®
R iPhone ®
R MP3 pla yer
R USB devices
Fo r de tails and a list of suppor ted devices, visit
our website at https://www.mercedes-
benz.com/connect. Follow the instructions in
th e "Media Inter face" section. Multimedia sy
stem 335

Information on using a high-p
ressure cleaner &
WARNING Risk of an accident when
using high-pressure cleane rswith round-
spray nozzles
The wate r jet can cause extern ally invisible
damage.
Components damaged in this wa y may unex‐
pec tedly fail. #
Do not use a high-pressure cleaner with
round-spr aynozzles. #
Have damaged tyres or chassis parts
re placed immediatel y.To
avo id damage to yourvehicle, obser vethefo l‐
lowing when using a high-pressure cleaner:
R The key is at a minimum distance of 3 m
aw ay from theve hicle. Otherwise the boot lid
could open unintentionall y.
R Maintain a dis tance of at least 30 cm tothe
ve hicle.
R Vehicles with deco rative foil: Parts of your
ve hicle are co vered with a decorative foil. Maintain a dis
tance of at least 70 cm
between thefo il-c ove red parts of theve hicle
and the nozzle of the high-pressure cleaner.
Mo vethe high-pressure cleaner nozzle
around whilst cleaning. The waterte mp era‐
ture of the high-pressure cleaner must not
exc eed 60°C.
R Obser vethe information on the cor rect dis‐
ta nce in the equipment manufacturer's oper‐
ating instructions.
R Do not direct the nozzle of the high-pressure
cleaner directly at sensitive parts, such as
tyres, soft top, wind deflector net, gaps, elec‐
trical components, batteries, light sources
and ventilation slits. Wa
shing theve hicle byhand *
NO
TEEngine dama gedue towa ter
ing ress #
Take care not topoint thewate r jet
directly towa rdsth e air inlet grille below
th e bonn et. obser
vethe legal requ irements, e.g. in a number
of countries, washing byhand is only permitted
in specially designated wash ba ys. #
Use a mild cleaning agent, e.g. car shampoo. #
Washtheve hicle with luk ewarmwate r using
a soft car sponge. When doing so, do not
ex pose theve hicle todirect sunlight. #
Carefully hose theve hicle off with water and
dry using a chamois.
% Obse rveth e no tes on the care of car parts
(/ page 368). Note
s on paint work/matt finish paint work
care Obse
rveth e no tes on cleaning and care toavo id
damaging the paintwor k.
Pa int
R Insect remains: soak with insect remo ver and
ri nse off the treated areas af terw ards.
R Bird droppings: soak with water and rinse off
af te rw ards. 364
Maintenance and care

Fr
equency band Maximum transmis‐
sion output
70 cm frequency
band
420 - 450 MHz 15 W
Tw o-w ayradio
(2G/3G/4G) 10 WThe
following devices can be used in theve hicle
without restrictions:
R two-w ayradios with a maximum transmission
output of up to100 mW
R two-w ayradios with transmit ter frequencies
in the 380 - 410 MHz frequency band and a
maximum transmission output of up to2 W
(trunked radio sy stem/T etra)
R mobile phones (2G/3G/4G)
There are no restrictions when positioning the
aerial on the outside of theve hicle forth efo llow‐
ing frequency bands:
R trunked radio sy stem/T etra
R 70 cm frequency band R
2G/3G/4G Re
gulatory radio identification of small
co mp onents
Manufacturer information about radio-based
ve hicle components can be found using thekey
phrase "Regulatory radio identification" in the
Digital Operator's Manual in theve hicle, on the
internet and in the app. Ve
hicle identification plate, VIN and engine
number overview
Ve hicle identification plate 414
Tech nical da ta

Key
Display messages
Possible causes/consequences and M
MSolutions
Á Replace key *H
avetheke yre placed. #
Consult a qualified specialist workshop.
Á Change key batteries *T
hekey bat tery is dischar ged. #
Replace the battery (/ page74).
Á Ke y not detected (white dis‐
play message) *T
hekey is cur rently und etected. #
Change the location of theke y in theve hicle. #
Ifth eke y is still not recognised, place it in the slot forst arting with theke y (/ page139). 434
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Á Key not detected (red dis‐
play message) *T
hekey cannot be de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you swit choff the engine:
R You can no lon gerst art the engine.
R You cannot centrally lock theve hicle. #
Ensure that theke y is in theve hicle.
If th eke y de tection function has a malfunction due toast ro ng radio signal source: #
Stop theve hicle immediately in accordance with the traf fic conditions. #
Place theke y in the slot forst arting the engine with theke y (/ page139).
Place the key in the
marked space See Owner's
Manual *K
eydetection is malfunctioning. #
Change the location of theke y in theve hicle. #
Place theke y in the slot forst arting the engine with theke y (/ page139). Displ
aymessa ges and warning/indicator lamps 435