MERCEDES-BENZ C CLASS 2023 Owners Manual

Multimedia system:4 © 5
RadioSelect TuneIn Radio .
The TuneIn menu appears. The last station set
starts playing.\bThe connection quality depends on the local mobile phone reception.
Setting up satellite radio
Requirements: = Satellite radio equipment is available.
= Registration with a satellite radio provider has
been completed.
= If registration is not included when purchasing
the system, your credit card details will be
required to activate your account.
Multimedia system:
4 © 5
Þ Radio 5
SiriusXM
5 =Select Service Information .
The service information screen appears show-
ing the radio ID and the current subscription status.Establish a telephone connection.Follow the service staM\bs instructions.
The activation process may take up to ten minutes.\bYou can also have the satellite service activa-
ted online. To do so, please visit https:// www.siriusxm.com (USA) or https://
www.siriusxm.ca (Canada).Music and sport alerts
Multimedia system:
4 © 5
Þ Radio 5
SiriusXM
5 = 5
Alerts
Setting music and sport alerts
This function enables you to program an alert for
your favorite artists, tracks or sporting events. Music alerts can be saved whilst a track is being
played and sport alerts can be saved during a live game. You can also specify sport alerts via the
menu option. The system then continuously
searches through all the channels.
Set a music or sports alert, to be informed of
matches in the live program.
Activating messages for a category
Select a category and activate D.
Adding messages for a category
Select a category and add a message

appears asking whether you wish to change to
the station.
Deleting messages in a category
Select a category, mark the desired messages
and delete *.
or
Do not mark any messages and delete all
entries *.
Sound settings
Overview of functions in the sound menu
The setting options and functions available
depend on the sound system installed. You can Nnd out which sound system is installed in your
vehicle in the Digital Operator\bs Manual.
Standard sound system
The following functions are available:
= Equalizer
- Treble, mid-range and bass
= Balance and fader
= Volume
- Automatic adjustment300MBUX multimedia system

ASSYST PLUS service interval display
Function of the ASSYST PLUS service interval dis-
play
The ASSYST PLUS service interval display on the driver\bs display provides information on the
remaining time or distance before the next
service due date.
You can hide this service display using the back button G on the steering wheel.
Depending on how the vehicle is used, the
ASSYST PLUS service interval display may shorten the service interval, e.g. in the following cases:
= Mainly short-distance driving
= When the engine is osen les idling for long
periods
= In the event of frequent cold start phases
Mercedes-Benz recommends avoiding such oper-
ating conditions.
You can obtain information concerning the servic-
ing of your vehicle from a qualiNed specialist
workshop, e.g. an authorized Mercedes-Benz Cen- ter.
Displaying the service due date
Driver\bs display:
4 Service
The next service due date is displayed.
To exit the display: press the back button
G on the steering wheel.
Bear in mind the following related topic:
= Operating the driver\bs display (  page 241).
Information on regular maintenance work
*NOTE Premature wear through failure to
observe service due dates
Maintenance work which is not carried out at
the right time or incompletely can lead to
increased wear and damage to the vehicle.
Adhere to the prescribed service inter- vals.Always have the prescribed maintenance
work carried out at a qualiNed specialist
workshop.Notes on special service requirements
The prescribed service interval is based on nor-
mal operation of the vehicle. Have the mainte-
nance work carried out more osen than prescri-
bed if operating conditions are diPcult or the
vehicle is subject to increased stress.
The ASSYST PLUS service interval display is only an aid. It is the responsibility of the driver of the vehicle to have maintenance work carried out
more osen than prescribed due to actual operat-
ing conditions and/or stresses.
Examples of arduous operating conditions:
= Regular city driving with frequent intermediate
stops
= Mainly short-distance driving
= Frequent operation in mountainous terrain or
on poor road surfaces
= When the engine is osen les idling for long
periods
= Operation in particularly dusty conditions
and/or if air-recirculation mode is frequently
used
Maintenance and care301

In these or similar operating conditions, have theinterior air Nlter, air Nlter, engine oil and oil Nlter,
for example, changed more frequently. If subject
to increased stress, check the tires more. Further
information can be obtained at a qualiNed special-
ist workshop.
Battery disconnection periods
The ASSYST PLUS service interval display can cal- culate the service due date only when the batteryis connected.
Display and note down the service due date
on the driver display before disconnecting the
battery (  page 301).
Maintenance Management
Notes about Maintenance Management
If the Maintenance Management service is activa-
ted, relevant data is automatically transferred to
the Mercedes-Benz customer center.
The customer center transmits the data to the
service partner that you have entered on the
Mercedes me website at: http://
www.mercedes.me. You will then receive individ-
ual recommendations regarding the maintenance of your vehicle.\bThe calculation of the optimal transmission
time of the maintenance request to the service partner is subject to technical limita-
tions that may cause the maintenance recom-
mendation to be perceived as too early or too
late or not to be made at all. In this case, you
can conveniently arrange a maintenance
appointment with the customer center via the
maintenance reminder in the multimedia sys-
tem.\bMaintenance Management and the mainte-
nance reminder in the multimedia system are not available in every country. Contact an
authorized Mercedes-Benz Center to Nnd out
whether this function is available in your coun-
try.Data transferred when using Maintenance Man-
agement
When the service is activated, relevant data is
automatically transferred to determine the
required scope of maintenance as well as mal-
function detection and malfunction rectiNcation.
Details on data transfer can be found in the data protection information for the Mercedes me con-
nect services. These can be found at: http://
www.mercedes.me under "My Mercedes me
account", "Terms of use".
\bMaintenance Management and the mainte-
nance reminder in the multimedia system are not available in every country.
Telediagnosis
Notes about Telediagnosis
\bThis service is not available in all countries.
The vehicle can detect if certain wear parts need
to be replaced or if malfunctions have occurred in
vehicle systems. If the Telediagnosis service is activated, relevant data is automatically transmit-
ted to the manufacturer. If fault conditions are
302Maintenance and care

detected by the vehicle system self-diagnosis, thesystem transmits recommendations for action to
the Mercedes-Benz customer center depending on the fault detected. The customer center trans-mits the data to the service partner that you haveentered on the Mercedes me website at: http://www.mercedes.me.
For selected faults, the notiNcation that a mal-
function has been detected may appear in the multimedia system with a request to contact the
Mercedes-Benz customer center. From this mes- sage, a call can be made directly to the customer
center for assistance.\bThe transmission of a notiNcation to the multi-
media system depends on the country, vehi- cle model and equipment and requires a fast
data connection, over which the service pro-
vider has no inOuence.\bReliable fault detection is subject to technical
limitations. Therefore, only a limited selection
of faults can be detected and recommenda- tions for action transmitted to the customer
center and the service partners. Mercedes- Benz AG is continuously working on theexpansion of this service. The fault detectiondepends on the country, vehicle model andequipment.
Data transferred when using Telediagnostics
When the service is activated, relevant data is
automatically transferred to determine the
required scope of maintenance as well as mal-
function detection and malfunction rectiNcation.
Details on data transfer can be found in the data protection information for the Mercedes me con-
nect services. These can be found at: http://
www.mercedes.me under "My Mercedes me
account", "Terms of use".
\bThe scope of the data transmitted depends on
the vehicle model and equipment. For techni-
cal reasons, not all data is available at all
times.Engine compartment
Opening and closing the hood
&WARNING Risk of accident due to driving
with the hood unlocked
The hood may open and block your view.
Never release the hood when driving.Before every trip, ensure that the hood is
locked.&WARNING Risk of accident and injury
when opening and closing the hood
The hood may suddenly drop into the end position.
There is a risk of injury for anyone in the
hood\bs range of movement.
Do not open or close the hood if there is a person in the hood\bs range of move-
ment.Maintenance and care303

&WARNING Risk of burns when opening the
hood
If you open the hood in the event of an over- heated engine or Nre in the engine compart-
ment, the following situations may occur:
= You may come into contact with hot gases.
= You may come into contact with other
escaping hot operating Ouids.
Before opening the hood, allow the
engine to cool down.In the event of a Nre in the engine com-
partment, keep the hood closed and call
the Nre service.&WARNING Risk of injury due to moving
parts
Components in the engine compartment may continue to run or start unexpectedly even
when the drive system is switched oM.
Observe the following if you must open the
hood:
Switch oM the vehicle.Never touch the danger zones surround-
ing moving components, e.g. the rotation
area of the fan.Remove jewelery and watches.Keep items of clothing and hair away from moving parts.&WARNING Risk of injury from touching live
components
The ignition system and the fuel injection sys- tem operate with a high voltage. You could
receive an electric shock.
Never touch components of the ignition
system or fuel injection system when the vehicle is switched on.The live components include the following, for
example:
= Ignition coils
= Fuel injectors=Electric lines to the ignition coils and the fuel
injectors&WARNING Risk of burns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system.
Allow the engine to cool down and only
touch component parts described in the
following.&WARNING Risk of injury from using the
windshield wipers when the hood is open
If the windshield wipers start moving when the
hood is open, you could be trapped by the wiper linkage.
Always switch oM the windshield wipers
and the vehicle Nrst if you need to open
the hood.304Maintenance and care

Opening the hoodTo release the hood, pull on handle 1.Push handle 2 of the hood catch upwards
and lis the hood until it opens automatically.
Closing the hood
*NOTE Damage to the hood
If the hood is closed manually, there is a risk
of dents.
Do not close the hood manually.Lower the hood to a height of around 8 in
(20 cm) and then allow it to fall, applying a lit-
tle force as you let it go.If the hood can still be lised slightly, open the
hood again and close it with a little more force
until it engages correctly.
Engine oil

q Checking the engine oil level using the driver\bs
display
Requirements
= The engine has been warmed up.
= The vehicle is parked on a level surface.
= The engine is running at idle speed.
= The hood is closed.
Determining the engine oil level can take up to
30 minutes with a normal driving style and even longer with an active driving style.
Driver\bs display: 4 Service
The engine oil level is shown.
Maintenance and care305

One of the following messages will appear on thedriver\bs display:
= Engine Oil Level Measuring Now

*NOTE Damage caused by reNlling too
much engine oil
Too much engine oil can damage the engine or
the catalytic converter.
Have excess engine oil removed at a
qualiNed specialist workshop.\bDepending on driving style, the vehicle con-
sumes up to 0.9 US qt (0.8 liters) of oil per 600 miles (1,000 km). The oil consumptionmay also be higher than this when the vehicle
is new or if you frequently drive at high engine
speeds.Turn cap 1 counter-clockwise and remove it.Add engine oil.Replace cap 1 and turn it clockwise until it
engages.Check the oil level again (  page 305).Checking the coolant level&WARNING Risk of burns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system.
Allow the engine to cool down and only
touch component parts described in the
following.&WARNING Risk of scalding from hot cool-
ant
If you open the cap, you could be scalded.
Let the motor cool down before opening
the cap.When opening the cap, wear protective
gloves and safety glasses.Open the cap slowly to release pressure.Maintenance and care307

Park the vehicle on a level surface.Check the coolant temperature display on thedriver\bs display.
The coolant temperature must be in the bot-
tom quarter of the temperature indicator.Slowly turn cap 1 counter-clockwise to
release overpressure.Continue turning cap 1 counter-clockwise
and remove it.
The coolant level is correct in the following cases:
= If the engine is cold, the coolant is up to
marker bar 2.
= If the engine is warm, the coolant is up to
0.6 in (1.5 cm) over marker bar 2.
If necessary, reNll with coolant that has been
approved for Mercedes-Benz.\bFurther information on coolant (  page 378)
ReNlling the windshield washer system
&WARNING Risk of injury due to moving
parts
Components in the engine compartment may continue to run or start unexpectedly even
when the drive system is switched oM.
Observe the following if you must open the
hood:
Switch oM the vehicle.Never touch the danger zones surround-
ing moving components, e.g. the rotation
area of the fan.Remove jewelery and watches.Keep items of clothing and hair away from moving parts.&WARNING Risk of burns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system.
Allow the engine to cool down and only
touch component parts described in the
following.&WARNING !