Useful information
i This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops ( Y
page 29).
Information regarding technical data
i The data stated here specifically refers to
a vehicle with standard equipment. Consult
an authorized Mercedes-Benz Center for
the data for all vehicle variants and trim
levels.
Vehicle electronics
Retrofitting two-way radios and
mobile phones (RF transmitters)
G WARNING
The electromagnetic radiation from modified
or incorrectly retrofitted RF-transmitters can
interfere with the vehicle electronics. This can
compromise the operational safety of the
vehicle. There is a risk of an accident.
You should have all work to electrical and
electronic equipment carried out at a qualified
specialist workshop. G WARNING
The electromagnetic radiation from incor-
rectly operated RF transmitters can interfere
with the vehicle electronics, for example: R
if the RF transmitter is not connected with
an exterior antenna R
the exterior antenna has been installed
incorrectly or is not a low-reflection type
This can compromise the operational safety
of the vehicle. There is a risk of an accident.
Have the low-reflection exterior antenna
mounted at a qualified specialist workshop.
When operating RF transmitters in the vehi-
cle, always connect them with the low-reflec-
tion exterior antenna.
! 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
compliance with the maximum permissi-
ble output in these wavebands is
required. R
only approved antenna positions may be
used.
Excessive levels of electromagnetic radiation
may cause damage to your health and the
health of others. Using an exterior antenna
takes into account current scientific discus-
sions relating to the possible health hazards
that may result from electromagnetic fields.
The following antenna positions may be used
if RF transmitters have been properly instal-
led:444
Vehicle electronics
Technical data
Approved antenna positions
C
Rear roof area D
Rear fender
i On the rear fenders, it is recommended to
position the antenna on the side of the
vehicle closest to the center of the road.
Use the Technical Specification ISO/TS
21609 when retrofitting RF transmitters
(Road Vehicles - EMC guidelines for installa-
tion of aftermarket radio frequency transmit-
ting equipment). Observe the legal require-
ments for retrofittings.
If your vehicle has installations for two-way
radio equipment, use the power supply or
antenna connections intended for use with
the basic wiring. Be sure to observe the man-
ufacturer's additional instructions when
installing.
Deviations with respect to wavebands, maxi-
mum transmission outputs or antenna posi-
tions must be approved by Mercedes-Benz.
The maximum transmission output (PEAK) at
the base of the antenna must not exceed the
following values:
Waveband Maximum
transmission
output
Short wave
3 - 54 MHz 100 W
4 m waveband
74 - 88 MHz 30 W Waveband Maximum
transmission
output
2 m waveband
144 - 174 MHz 50 W
Trunked radio/Tetra
380 - 460 MHz 10 W
70 cm waveband
400 - 460 MHz 35 W
Mobile communications
(2G/3G/4G) 10 W
The following can be used in the vehicle with-
out restrictions: R
RF transmitters with a maximum transmis-
sion output of up to 100 mW R
RF transmitters with transmitter frequen-
cies in the 380 - 410 MHz waveband and a
maximum transmission output of up to 2 W
(trunked radio/Tetra) R
Mobile telephones (2G/3G/4G)
There is no restriction for antenna positions
on the outside of the vehicle for the following
wavebands: R
Trunked radio/Tetra R
70 cm waveband R
2G/3G/4GVehicle electronics 445
Technical data Z
