warranty and operating permit may be inva-
lidated.
Retrofitting of two-way radios and
mobile phones (RF transmitter)
When retrofitting RF transmitters, the
ISO/TS 21609 technical specifications
49
are
to be used.
If your vehicle has fittings for two-way radio
equipment (e.g. taxis, hire cars or official vehi-
cles), use the power supply or aerial connec-
tions intended for use with the basic wiring.
Be sure to observe the manufacturer's addi-
tional instructions when installing the fittings.
!
The Mercedes-Benz warranty does not
cover consequential damage resulting from
improper installation.
To ensure proper installation, Mercedes-
Benz recommends having this work done
at a Mercedes-Benz Service Centre or at a
qualified specialist workshop.
Transmission output
Transmission output at the aerial base must
not exceed the maximum values below.
Waveband
Maximum trans-
mission output
(PEAK)
Short wave
(f < 54 MHz)
100 W
4 m waveband
30 W
2 m waveband
50 W
Trunked radio/Tetra 35 W
70 cm waveband
35 W
GSM 900/AMPS
10 W
Waveband
Maximum trans-
mission output
(PEAK)
GSM 1800
10 W
UMTS
10 W
Aerial positions
The following aerial positions may be used if
RF transmitters have been properly installed:
:
Front roof area (vehicles with sliding/tilt-
ing sunroof*: observe the roof's sweep)
(vehicles with panorama sliding roof*: this
area is not authorised for use)
;
Rear roof area (vehicles with panorama
sliding sunroof*: this area is not author-
ised for use)
=
Rear mudguard (recommended installa-
tion position: on the side which faces the
centre of the road)
?
Boot lid
G
Risk of accident
Incorrect retrofitting of RF transmitters can
cause the vehicle electronics to malfunction,
impair the vehicle's operating safety and,
thus, also impair your own safety.
To ensure proper installation, Mercedes-Benz
recommends having this work done at a
Mercedes-Benz Service Centre or at a quali-
fied specialist workshop.
49
ISO/TS 21609 – Technical Specification for Road Vehicles -- (EMC) guidelines for installation of aftermarket
radio frequency transmitting equipment.
Vehicle electronics
423
Tec
hni
cal
da
ta
* optional
221_AKB; 2; 3, en-GB
bjanott,
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