service reset MERCEDES-BENZ C-CLASS COUPE 2021 Owners Manual

Moreo
ver,connecting equipment tothe diagnos‐
tics connection can lead toemissions monitor‐
ing information being reset, forex ample. This
may lead totheve hicle failing tomeet the
re qu irements of the next emissions inspection
during the main inspection. Qualified specialist
workshop
A qu alified specialist workshop has the neces‐
sary special skills, tools and qualifications to
cor rectly car ryout any necessary workon your
ve hicle. This particularly applies tosaf ety-re le‐
va nt wo rks.
Alw ays ha vethefo llowing workcar ried out on
yo ur vehicle at a qualified specialist workshop:
R safety-re leva nt wo rks
R service and maintenance work
R repair work
R modifications as well as ins tallations and
con versions
R workon electronic components R
vehicles with 48 V on-board electrical
sy stem (EQ boost tech nology): workon
high voltage components of the 48 V on-
board electrical sy stem
Mercedes‑Benz recommends a Mercedes‑Benz
service centre. Ve
hicle registration
Mercedes-Benz may ask its service centres to
car ryout tech nical inspections on cer tain vehi‐
cles. The quality or saf ety of theve hicle is
impr oved as a result of the inspection.
Mercedes-Benz can only inform you about vehi‐
cle checks if Mercedes-Benz has your registra‐
tion data.
It is possible that your vehicle has not yet been
re gis tere d in your name in thefo llowing cases:
R ifyo ur vehicle was not pur chased at an
authorised specialist dealer.
R ifyo ur vehicle has not yet been examined at
a Mercedes-Benz service centre. It is advisable
toregis teryo ur vehicle with a
Mercedes-Benz service centre.
Inform Mercedes-Benz as soon as possible
about any change in address or vehicle owner‐
ship. You can do this at a Mercedes-Benz service
centre, forex ample. Cor
rect use of theve hicle
If yo ure mo veany warning sticke rs,yo u or others
could failto recognise cer tain dangers. Lea ve
wa rning sticke rs in position.
Obser vethefo llowing information in particular
when driving your vehicle:
R the saf ety no tes in this manual
R tech nical da taforth eve hicle
R traf fic ru les and regulations
R laws and saf etyst andards per taining to
mo torve hicles Information on
the REACH regulation
EU and EFTA countries onl y: Gene
ral no tes 31

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

Un
blocking the PIN
If th e PIN has been entered incor rectly three
times, the PIN will be bloc ked. You can ha ve a
single-use password sent to you via the
Mercedes me connect online por talto reset the
PIN pr otection. #
Select Unblock PIN. #
Ente rth e single-use password.
PIN pr otection is reset, and you can set a
new PIN.
% The availability of this function is country
dependent and may not be available in your
count ry.
Alternati vely, you can ha vePIN pr otection
re set at a Mercedes-Benz service centre. User profile
Setting a user profile
Multimedia sy
stem:
4 System 5
g Personalisation
Displaying a user profile when starting
If th is function is active, a prom ptappears when
st arting the sy stem asking which user profile to
use. #
Select Display profile list after start . #
Activate Oor deacti vate ª the function.
Selecting a user profile #
Select Guestor individual profile #.
% Some settings from the user profile are only
loaded when theve hicle is stationary or
when the ignition is switched on.
Au tomatic syn chronisation
Each time the ignition is switched off or on, the
individual user profiles are synchronised on the
multimedia sy stem and on the ser ver.This
ensures that the latest user profiles are availa‐
ble. #
Select Automatic synchronisation. #
Activate Oor deacti vate ª the function.
% For more information about importing/
ex porting user profiles (/ page272).
Crea ting a user profile
Multimedia sy stem:
4 System 5
g Personalisation
5 Create profile #
Ente r a name. #
Select a.
The following information is sa ved in the user
profile, forex ample:
R System settings
R Settings in theTV tuner's channel list
R Navigation and traf fic information
The settings di ffer depending on theve hicle
equipment. Multimedia sy
stem 271

Importing/exporting a user profile
Re
quirements:
R There is an Internet connection
(/ page 330).
R A Mercedes me account exists at https://
me.secure.mercedes-benz.com.
R The Personalisation service is active.
R The function is available in your count ry.
Multimedia sy stem:
4 System 5
g Personalisation
5 Manual export/import
Importing a user profile #
Select Import profiles from the server.
The The profile import overwrites the exist-
ing profiles. Do you want to continue? mes‐
sage appears. #
Select Yes.
User profiles are impor ted.
Exporting a user profile #
Select Export profiles to the server.
User profiles are expor ted. %
Only individual profiles can be impor ted or
ex por ted. The individual profiles are alw ays
collectively impor ted or expor ted.
% Certain settings, such as address book
ent ries or pr evious destinations from the
navigation sy stem, are not expor ted.
Setting user profile options
Multimedia sy stem:
4 System 5
g Personalisation #
Highlight a profile. #
Select ¥options.
The following options are available:
R Rename
R Delete
R Reset
% The guest profile cannot be dele ted or
re named. So
ftwa reupdates Information on software updates
The multimedia sy
stem displa ysa cor responding
message when a software update isavailable.
The availability of this function is dependent on
th e count ry.
Depending on the source, you can per form
va rious upda tes: Source of
the
update Up
date type
Up dates via mobile
phone Na
vigation map, sys‐
te m updates, Digital
Owner's Manual
Up dates via an exter‐
nal storage medium,
e.g. a USB flash drive Na
vigation maps %
Software updates via mobile phone requ ire
an active Internet connection forth eve hicle.
This is not available in all countries. For fur‐
th er information on connecting tothe Inter‐
net, see (/ page 329). 272
Multimedia sy stem

The sy
stem update can be downloaded man‐
ually at a later time (/ page273).
Yo u will be informed when the download is com‐
ple teand the sy stem update is ready for ins talla‐
tion.
% Park theve hicle safely in a suitable location
before starting the ins tallation.
Re quirements forth e ins tallation:
R The ignition is switched on.
R The engine is not running.
R Notes and warnings ha vebeen read and
accep ted.
R The parking brake is applied.
If all requirements are met, the sy stem update is
ins talled. The multimedia sy stem cann otbe
operated during the ins tallation and vehicle func‐
tions are restricted.
If er rors should occur during the ins tallation, the
multimedia sy stem automatically attem ptsto
re store the pr evious version. If restoration of the
pr ev ious version is not possible, a symbol
appears on the multimedia sy stem displa y.Con‐ sult a
qualified specialist workshop toresol ve
th e problem. Re
set function &
WARNING Risk of accidents due tofail‐
ure of multimedia display functions
While the multimedia sy stem is being reset,
its functions such as there ve rsing camera
are not available. #
Only re setthe multimedia sy stem when
th eve hicle is stationar y. Multimedia sy
stem:
4 System 5
Reset
Pe rsonal data is dele ted, forex ample:
R Station presets
R Connec ted mobile phones #
Select Yes.
If PIN pr otection is activated, a prom ptappears
asking if you also wish torestore this to thefa c‐
to ry settings during a reset. #
Select Yes. #
Enter the cur rent PIN.
The PIN is reset.
or #
Select No.
The cur rent PIN stay sth e same af terre set‐
ting.
% Ifyo u ha veforg ottenyo ur PIN, a Mercedes-
Benz service centre can deactivate the PIN
pr otection foryo u.
A prom ptappears again asking whe ther you
re ally wish toreset. #
Select Yes.
The multimedia sy stem is reset tothefa ctory
settings. 274
Multimedia sy stem

Fo
r map data that you ha vepur chased in the
fo rm of a data storage medium, you must en ter
th e accompanying activation code.
% Ifyo u sa vethe map data on a data storage
medium with the online map update service,
no entry isrequ ired. The activation code is
st ored on the data storage medium during
th e downloading process.
The online map update service is not availa‐
ble in all countries.
Obse rveth efo llowing when entering the activa‐
tion code:
R The activation code can be used for one vehi‐
cle
R The activation code is not transferable
R The activation code has six digits
In theeve nt of thefo llowing problems, please
con tact a Mercedes-Benz service centre:
R The multimedia sy stem does not accept the
activation code
R You ha velost the activation code Displaying
the compass
Multimedia sy stem:
4 Navigation 5
À Route and position #
Select Compass.
The compass display sho wsthefo llowing
information:
R the cur rent di rection of tr avel with bear‐
ing (360° form at) and compass direction
R longitude and latitude coo rdinates in
degrees, minutes and seconds
R height (rounded)
R number of GPS satellites from which a
signal can be recei ved
Displaying Qibla
Requ irements:
R The Qibla display is available in your count ry.Multimedia sy
stem:
4 Navigation 5
À Route and position #
Select Qibla.
The ar rowonthe compass sho wsthe direc‐
tion of pr ayer toMecca in relation tothe cur‐
re nt di rection of tr avel.
The number of satellites recei ved is shown.
Setting the map scale automatically
Multimedia sy stem:
4 Navigation 5
Z Options
The map scale is set automatically depending on
yo ur driving speed.
Fo r journe ysin cities with de tailed city models, a
map view from the driver's perspective is used. #
Switch Auto zoom onO or off ª.
% The automatically selected map scale can be
changed manually for a short time. The set‐
ting is reset automatically af ter a few sec‐
onds. Multimedia sy
stem 301

#
Tostart the dictation function: press on
th e cent ral control element.
The app forth e dictation function is loaded.
If th ere was no prior Internet connection, a
connection is now es tablished. #
Say the message.
The dictation ends automatically af teryou
ha ve finished speaking.
Af terth evo ice message has been processed,
it is shown as text. #
Toreplace a message: selectReplace mes-
sage.
The text that has been dictated and shown
on the display is reset and can be dictated
again.
Editing text #
Select thewo rd. #
Tocall up the cor rection menu: press on
th e cent ral control element.
The following options are available:
R adjusting the capitalisation of words (if
suppor tedby thech aracter set) R
expanding thech oice of words
R deleting the selection
R recording a new dictation #
Tolea vethe menu: selectDone.
Sending text messages #
Select Send text message .
Re plying toate xt message
Multimedia sy stem:
4 Telephone 5
i Text message #
Open thete xt messa ge. #
Select p. #
Select Reply.
Calling a text message sender
Multimedia sy stem:
4 Telephone 5
i Text message #
Open thete xt messa ge. #
Select p. #
Select Call sender. Deleting
text messages
Multimedia sy stem:
4 Telephone 5
i Text message #
Select p. #
Todel ete a text message: selectDelete. #
Outbox
or #
Select Drafts. In-Car Of
fice "In Car Of
fice" functions
Using "In Car Of fice", you can connect your
online services with the multimedia sy stem.
The following functions are available:
R Display of upcoming meetings in the calen‐
dar
R Selection of a meeting as a destination in the
navigation
R Display of upcoming telephone con fere nces
R Selection of telephone con fere nces for auto‐
matic dialling 314
Multimedia sy stem

The mobile phone continues
tobe supplied
with elect ricity.
or #
Disconnect the connecting cable between
th e mobile phone and multimedia sy stem.
Mercedes-Benz recommends disconnecting
th e connecting cable only when theve hicle is
st ationar y. Tr
ansfer redve hicle data with Android Auto
and Apple CarPlay ®Overview of transfer
redve hicle data
When using Android Autoor Apple CarPlay ®
, cer‐
ta in vehicle data is transfer redto the mobile
phone. This enables youto getth e best out of
selected mobile phone services. Vehicle data is
not directly accessible.
The following sy stem information is transmit ted:
R Software release of the multimedia sy stem
R System ID (anonymised) The transfer of
this data is used tooptimise
communication between theve hicle and the
mobile phone.
To do this, and toassign se veralve hicles tothe
mobile phone, a vehicle identifier is randomly
ge nerated.
This has no connection totheve hicle identifica‐
tion number (VIN) and is dele ted when the multi‐
media sy stem is reset (/ page274).
The following driving status data is transmit ted:
R Transmission position engaged
R Distinction between par ked, standstill, rolling
and driving
R Day/night mode of the instrument clus ter
The transfer of this data is used toalter how
con tent is displ ayed tocor respond tothe driving
situation.
The following position data is transmitte d:
R Coordinates
R Speed
R Compass direction
R Acceleration di rection This da
tais only transfer red while the navigation
sy stem is active in order toimpr oveit (e.g. so it
can continue functioning when in a tunnel). Mercedes me calls
Making a call via the
overhead control panel
Requ irements:
R You ha veaccess toa GSM networ k.
R The contra ct partner's GSM network co ver‐
age is available in there spective region.
R The ignition is switched on so that vehicle
data can be transfer red automaticall y.
% Mercedes me calls are not possible in every
count ry. Find out at a Mercedes-Benz
service centre if these functions are availa‐
ble in your count ry. 320
Multimedia sy stem

R
The Blue tooth®
function is switched off on
th e mobile phone and the mobile phone is to
be connec ted via Blue tooth®
R Neither the mobile phone network nor the
mobile phone allow simultaneous use of a
te lephone and an Internet connection
R The mobile phone has not been enabled for
Internet access via Blue tooth®
If a mobile phone is connected tothe multimedia
sy stem forth efirs t time via Blu etoo th®
,yo u will
be assis tedth ro ugh the process of setting up an
Internet connection.
The Internet connection can also be confi gured
manually.
Fu rther information can be obtained at https://
www.mercedes-benz-mobile.com/ or at a
Mercedes-Benz service centre. Multimedia sy
stem:
4 System 5
ö Connectivity
5 Internet settings
Blue tooth ®
connection via PAN #
Select the mobile phone.
The Internet connection is es tablished.
Switching the Blu etoo th®
pr ofile
Re quirements:
R The mobile phone supports the DUN and
PA N Blue tooth®
profiles.
Multimedia sy stem:
4 System 5
ö Connectivity
5 Internet settings #
Toswitch from DUN toPAN: select the
mobile phone. #
Select ¥. #
Select Change configuration. #
Activate OAutomatic configuration.
The Internet connection is au tomatical lycon‐
fi gured using thePA N Blue tooth®
profile. #
Toswitch from PANto DUN: select the
mobile phone. #
Select ¥. #
Select Change configuration. #
Deactivate ªAutomatic configuration. #
Select Configure settings using COMAND . #
Configuri ngthe Internet connection using
preset or manual access data (/ page 330).
Editing Internet access data
Re quirements:
R The mobile phone supports the Blue tooth®
DUN profile.
Multimedia sy stem:
4 System 5
ö Connectivity
5 Internet settings #
Highlight the mobile phone. #
Select ¥. #
Select Change configuration . #
For mobile phones with PAN and DUN:
select Configure settings using COMAND. Multimedia sy
stem 331

Calling up
thera dio station list Multimedia sy
stem:
4 Radio 5
è #
Select a station. Sear
ching forra dio stations using station
names or direct frequency entry Multimedia sy
stem:
4 Radio 5
è #
Ente r astation name or frequenc y.#
Select a.
The sea rchre sults are displa yed. #
Select a station. St
oring radio stations Multimedia sy
stem:
4 Radio 5
ß Presets #
Select Store current station in the presets . Managing
radio station presets Multimedia sy
stem:
4 Radio 5
ß Presets
Moving stations: #
Highlight a preset entry and navigate tothe
left. #
Select Move highlighted station. #
Select a memo rypreset.
Deleting stations: #
Highlight a preset entry and navigate tothe
left. #
Select Delete highlighted station. #
Select Yes. Calling up a slide show (FM/DAB
radio mode) Multimedia sy
stem:
4 Radio 5
Þ Radio source
5 FM/DAB radio Slide show
1displa ysadditional information
pr ov ided bythest ation as an image. This can
include logos, album co vers, music trac ks, pro‐
grammes, ne wsor service information, forex am‐
ple. The additional information is shown in full-
sc reen mode byselecting 2. #
Toactivate full-screen mode: select#
Full screen. Multimedia sy
stem 349