radio MERCEDES-BENZ C-CLASS CABRIOLET 2018 Owner's Guide

XMake sure that the SmartKey is in position2
in the ignition lock (Ypage 123).
XPress òon the steering wheel to call up
the menu list.
XPress 9or: on the steering wheel to
select the Servicemenu.
XConfirm by pressing aon the steering
wheel.
XPress 9or: to select Tire Pres‐sure.
XPressato confirm.
The multifunction display shows the current
tire pressure of each wheel or the Tire
pressure will be displayed afterdriving a few minutesmessage.
XPress the:button.
The UseCurrentPressuresasNewRef‐erence Valuesmessage is shown on the
multifunction display.
If you wish to confirm the restart:
XPress the abutton.
The TirePress.MonitorRestartedmes-
sage is shown on the multifunction display.
After driving for a few minutes, the system
checks whether the current tire pressures are within the specified range. The new tire pres-
sures are then accepted as reference values
and monitored.
If you wish to cancel the restart:
XPress the %button.
The tire pressure values stored at the last
restart will continue to be monitored.
Radio type approval for the tire pres-
sure monitor
CountryRadio type approval number
USAFCC ID: MRXGG4
FCC ID: MRXMC34MA4
CanadaIC: 2546A-GG4
Loading the vehicle
Instruction labels for tires and loads
GWARNING
Overloaded tires can overheat, causing a
blowout. Overloaded tires can also impair the steering and driving characteristics and lead
to brake failure. There is a risk of accident.
Observe the load rating of the tires. The load
rating must be at least half of the GAWR of
your vehicle. Never overload the tires by
exceeding the maximum load.
Two instruction labels on your vehicle show the maximum possible load.
(1) The Tire and Loading Information placard is on the B-pillar on the driver's side. The Tire
and Loading Information placard shows the
maximum permissible number of occu-
pants and the maximum permissible vehicle
load. It also contains details of the tire sizes
and corresponding pressures for tires
mounted at the factory.
(2) The vehicle identification plate is on the B- pillar on the driver's side. The vehicle iden-
tification plate informs you of the gross
vehicle weight rating. It is made up of the
vehicle weight, all vehicle occupants, the
fuel and the cargo. You can also find infor-
mation about the maximum gross axle
weight rating on the front and rear axle.
The maximum gross axle weight rating is
the maximum weight that can be carried by
one axle (front or rear axle). Never exceed
the maximum load or the maximum gross
axle weight rating for the front or rear axle.
:B-pillar, driver's side
322Loading the vehicle
Wheels and tires

Information regarding technical data
i
The dat astate dher especifically refers to a
vehicl ewit hstandard equipment. Consult an
authorize dMercedes-Ben zCente rfor th e
dat afor all vehicl evariants and trim levels.
Vehicle electronics
Installing two-way radios and mobile
phones
GWARNIN G
The electromagneti cradiation from two-way
radios can interfere wit hth evehicl eelectron -
ics if two-way radios are manipulated or ret -
rofitte dincorrectly. This could jeopardiz eth e
operating safet yof th evehicle. Ther eis aris k
of an accident.
You should hav eall wor kon electrical and
electronic component scarried out at aquali-
fie dspecialist workshop.
GWARNIN G
If you incorrectl yoperate two-way radios in
th evehicle, th eelectromagneti cradiation
may interfere wit hth evehicl eelectronics ,for
exampl eif:
Rth etwo-way radi ois no tconnecte dto an
exterio rantenna
Rth eexterio rantenna is no tcorrectl ymoun -
te dor is no tlow-reflection
This could jeopardiz eth eoperating safet yof
th evehicle. Ther eis aris kof an accident.
Hav eth elow-reflection exterio rantenna
installed at aqualified specialist workshop.
Always connec ttwo-way radios to th elow-
reflection exterio rantenna when operating in
th evehicle.
!The operating permit may be invalidated if
th einstruction sfor installation and use of
two-way radios are no tobserved. In particular, th
efollowin gcondition smust be
complied with:
Ronly approve dwavebands may be used.
Robserv eth emaximum permissible output
in these wavebands.
Ronly approve dantenna position smay be
used.
Excessiv elevels of electromagneti cradiation
may caus edamag eto your healt hand th ehealt h
of others. Using an exterio rantenna takes int o
accoun tcurren tscientific discussion srelating
to th epossible healt hhazards that may result
from electromagneti cfields.
Approved antenna position s
:Rear fender
On th erear fenders, it is recommended to posi-
tion th eantenna on th eside of th evehicl eclos-
est to th ecenter of th eroad .
Use Technical Specification ISO/TS 2160 9
(Road Vehicles –"EM Cguidelines for installa-
tion of aftermarket radi ofrequency transmitting
equipment") when retrofitting two-way radios.
Observ eth elegal requirements for accessory
parts.
If your vehicl ehas installation sfor two-way radi o
equipment, use th epower suppl yor antenna
connection sintended for use wit hth ebasic wir-
ing .Be sur eto observ eth emanufacturer' sSup -
plemen twhen installing.
Deviation swit hrespec tto frequency bands,
maximum transmission output sor antenna
position smust be approve dby Mercedes-Benz.
338Vehicle electronics
Technical data

The maximum transmission output (PEAK) at the
base of the antenna must not exceed the fol-
lowing values:
Frequency bandMaximum
transmission output
Short wave
3 - 54 MHz30 W
4 m waveband
74 - 88 MHz15 W
2 m waveband
144 - 174 MHz25 W
Trunked radio system/
Tetra
380 - 460 MHz10 W
70 cm waveband
400 - 460 MHz15 W
Mobile communications
(2G/3G/4G)10 W
The following can be used in the vehicle without
restrictions:
RTwo-way radios with a maximum transmission
output of up to 100 mW
RTwo-way radios with transmitter frequencies
in the 380 - 410 MHz waveband and a maxi-
mum transmission output of up to 2 W
(trunked radio/Tetra)
RMobile phones (2G/3G/4G)
There is no restriction for antenna positions on
the outside of the vehicle for the following fre-
quency bands:
RTrunked radio system/Tetra
R70 cm waveband
R2G/3G/4G
Identification plates
Vehicle identification plate with vehi-
cle identification number (VIN)
XOpen the driver's door.
You will see vehicle identification plate :.
Example: vehicle identification plate (USA
only)
:VIN
;Vehicle model
Example: vehicle identification plate (Can-
ada only)
:VIN
;Paint code
Identification plates339
Technical data
Z