2016 MERCEDES-BENZ C-CLASS CABRIOLET radio

way radios) that may be being operated in or
near the vehicle.
Checking the tyre pressure electroni-
cally X
Make sure that the key is in position 2in the
ignition lock (Y page 133).
X Press òon the steering wheel to call up
the menu list.
X Press 9or: on the steering wheel to
select the Service
Service menu.
X Confirm by pressing aon the steering
wheel.
X Select Tyre pressure Tyre pressure with9 or:.
X Press ato confirm.
The multifunction display shows the current
tyre pressure of each wheel.
If the vehicle was parked for longer than
20 minutes, the following message appears:
Tyre pressures will be displayed Tyre pressures will be displayed
after a few minutes of driving
after a few minutes of driving.
After a teach-in period, the tyre pressure moni-
tor automatically detects new wheels or new
sensors. As long as a clear allocation of the tyre pressure values to the individual wheels is not
possible, the Tyre Tyrepressure
pressure monitor
monitoractive
active
message is shown instead of the tyre pressure
display. The tyre pressures are already being
monitored.
After an emergency spare wheel has been fitted, the system may still display the tyre pressure of
the removed wheel for a few minutes. If this
occurs, note that the value displayed for the
position where the spare wheel is fitted is not
the same as the current tyre pressure of the
emergency spare wheel.
Warning messages of the tyre pressure monitor If the tyre pressure monitor detects a pressure
loss in one or more tyres, a warning message is
shown on the multifunction display. The yellow
tyre pressure warning lamp then lights up:
R If the Please correct tyre pressure
Please correct tyre pressure
message appears on the multifunction dis-
play, the tyre pressure in at least one tyre is
too low. The tyre pressure must be corrected when the opportunity arises.
R If the Check tyre(s)
Check tyre(s) message appears on
the multifunction display, the tyre pressure in at least one tyre has dropped significantly.
The tyres must be checked.
R If the Warning tyre defect
Warning tyre defect message
appears on the multifunction display, the tyre pressure in at least one tyre has dropped sud-
denly. The tyres must be checked.
Observe the instructions and safety notes in the
display messages in the "Tyres" section
(Y page 265).
If the position of the wheels on the vehicle is
changed, the tyre pressures may be displayed in
the wrong positions for a short time. After a few minutes of driving, this is rectified and the tyre
pressures are displayed in the correct positions.
Restarting the tyre pressure monitor When you restart the tyre pressure monitor, all
existing warning messages are deleted and the
warning lamps go out. The monitor uses the cur-
rently set tyre pressures as the reference values
for monitoring. In most cases, the tyre pressure monitor will automatically detect the new refer- ence values after you have changed the tyre
pressure. However, you can also set reference
values manually as described here. The tyre
pressure monitor then monitors the new tyre
pressure values.
X Use the table on the inside of the fuel filler flap
to ensure that the tyre pressure is set cor-
rectly in all four tyres for the current operating
conditions.
Also observe the notes in the section on tyre
pressures (Y page 345).
X Make sure that the key is in position 2in the
ignition lock (Y page 133).
X Press òon the steering wheel to call up
the menu list.
X Press 9or: on the steering wheel to
select the Service
Service menu.
X Confirm by pressing aon the steering
wheel.
X Select Tyre pressure Tyre pressure with9 or:.
X Press ato confirm.
The multifunction display shows the current
tyre pressure of each wheel or the Tyre Tyre
pressures
pressures will
willbe
bedisplayed
displayed after
aftera
a
few minutes of driving
few minutes of driving message.
X Press the :button.
The Use
Use current
current pressures
pressures as
asnew
new ref‐
ref‐
erence values
erence values message is shown on the
multifunction display. Tyre pressure
349Wheels and tyres Z

If you wish to confirm the restart:
X Press the abutton.
The Tyre
Tyre press.
press. monitor
monitor restarted
restarted mes-
sage is shown on the multifunction display.
After you have driven for a few minutes, the
system checks whether the current tyre pres- sures are within the specified range. The new
tyre pressures are then used as reference val-
ues and monitored.
If you wish to cancel the restart: X Press the %button.
The tyre pressure values stored at the last
restart will continue to be monitored.
Radio type approval for the tyre pres-
sure monitor Country Radio type approval number
Argentina MW2433A
H-12337
GG4
H-12338
Brazil 2770-12-8001
Model: MW2433A
0381-13-8001
Model: GG4
Abu Dhabi
Dubai TRA, Registered NO
ER0092100/12
TRA, Registered NO
ER0099792/12
TRA, Registered NO
ER0076990/11
Dealer NO: DA0047074/10
Jordan Model: Gen Alpha Wal 2 TPMS
transmitter
Type Approval Number:
TRC/LPD/2012/114
Model: Gen Gamma Gen 4
433.92 Mhz.
Type Approval Number:
TRC/LPD/2012/190
Model: Corax 3 MRXMC34MA4
Type Approval Number:
TRC/LPD/2011/158
Type Number: LPD Country Radio type approval number
Morocco MR7319 ANRT 2012/
11/07/2012
MR7672 ANRT 2012/
23/11/2012
MR6706 ANRT 2011 Moldova 1024
Philip-
pines No: ESD-1206394C
No: ESD-1306871C
Serbia И 011 12
Singapore Compliance with IDA Standard
DA- 103365
South
Africa TA-2012/719
TA-2012/1540
TA-2011/1370
Changing a wheel
Flat tyre
You can find information on what to do in the
event of a flat tyre in the "Breakdown assis-
tance" section (Y page 326). Information on
driving with MOExtended tyres in the event of a flat tyre can be found under "Breakdown assis-
tance" (Y page 326).
Vehicles with an emergency spare wheel: in
the event of a flat tyre, the emergency spare
wheel is fitted according to the description
under "Fitting a wheel" (Y page 351). Interchanging the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if
the wheels or tyres have different dimensions. The wheel brakes or suspension components may also be damaged. There is a risk of acci-
dent.
Interchange front and rear wheels only if the
wheels and tyres are of the same dimensions. 350
Changing a wheelWheels and tyres

Information on technical data
i The technical data were determined in
accordance with EU Directives. All data apply
to the vehicle's standard equipment. The data may therefore differ for vehicles with optional
equipment. You can obtain further informa-
tion from a Mercedes-Benz Service Centre. Vehicle electronics
Tampering with the engine electron-
ics
! Only have work carried out on the engine
electronics and its associated parts, such as
control units, sensors, actuating components
and connector leads, at a qualified specialist
workshop. Vehicle components may other-
wise wear more quickly and the vehicle's
operating permit may be invalidated. Fitting two-way radios and mobile
phones (RF transmitters) G
WARNING
If RF transmitters are tampered with or not
properly retrofitted, the electromagnetic radi- ation they emit can interfere with the vehicle
electronics. This may jeopardise the opera-
tional safety of the vehicle. There is a risk of an
accident.
You should have all work on electrical and
electronic components carried out at a quali-
fied specialist workshop. G
WARNING
If you operate RF transmitters incorrectly in
the vehicle, the electromagnetic radiation
could interfere with the vehicle electronics,
e.g.:
R if the RF transmitter is not connected to an
exterior aerial
R the exterior aerial has been fitted incor-
rectly or is not a low-reflection type
This could jeopardise the operating safety of
the vehicle. There is a risk of an accident. Have the low-reflection exterior aerial fitted at
a qualified specialist workshop. When oper-
ating RF transmitters in the vehicle, always
connect them to the low-reflection exterior
aerial.
! The operating permit may be invalidated if
the instructions for installation and use of RF
transmitters are not observed.
In particular, the following conditions must be complied with:
R only approved wavebands may be used.
R observe the maximum permissible output
in these wavebands.
R only approved aerial positions may be
used.
Excessive levels of electromagnetic radiation
may cause damage to your health and to the
health of others. The use of an exterior aerial
takes into consideration the scientific discus-
sion surrounding the possible health risk posed
by electromagnetic fields. Approved aerial positions
: Rear wings
On the rear wings, it is recommended that you
position the aerial on the side of the vehicle
closest to the centre of the road.
Use Technical Specification ISO/TS 21609
(Road Vehicles – "EMC guidelines for installa-
tion of aftermarket radio frequency transmitting
equipment") when retrofitting RF transmitters.
Comply with the legal requirements for add-on
parts.
If your vehicle has fittings for two-way radio
equipment, use the power supply or aerial con-
nections intended for use with the basic fittings. Be sure to observe the manufacturer's addi-
tional instructions when installing. 358
Vehicle electronicsTechnical data

Deviations in respect of wavebands, maximum
transmission outputs or aerial positions must be approved by Mercedes-Benz.
The maximum transmission output (PEAK) at the base of the aerial must not exceed the followingvalues: Waveband Maximum
transmission output Short wave
3–54 MHz 30 W
4 m waveband
74–88 MHz 15 W
2 m waveband
144–174 MHz 25 W
Trunked radio/Tetra
380–460 MHz 10 W
70 cm waveband
400–460 MHz 15 W
Mobile communications
(2G/3G/4G) 10 W
The following can be used in the vehicle without
restrictions:
R RF transmitters with a maximum transmis-
sion output of up to 100 mW
R RF transmitters with transmitter frequencies
in the 380–410 MHz waveband and a maxi-
mum transmission output of up to 2 W
(trunked radio/Tetra)
R Mobile phones (2G/3G/4G)
There are no restrictions when positioning the
aerial on the outside of the vehicle for the fol-
lowing wavebands:
R Trunked radio/Tetra
R 70 cm waveband
R 2G/3G/4G Identification plates
Vehicle identification plate with vehi-
cle identification number (VIN)
X
Open the right-hand door.
You will see the vehicle identification
plate :. Example: vehicle identification plate
(Kuwait)
: Vehicle manufacturer
; Place of manufacture
= Date of manufacture
? Vehicle model
A VIN Identification plates
359Technical data Z