Vehicle Electronics - Mercedes-Benz M-Class Owner's Manual

H
Environmental note
Daimler AG also supplies reconditioned
assemblies and parts which are of the same
quality as new parts. For these, the same war-
ranty applies as for new parts.
Always specify the vehicle identification num-
ber (VIN) ( page 372) and the engine num-
Y
ber ( page 373) when ordering genuine
Y
Mercedes-Benz parts.

Vehicle electronics

Tampering with the engine electron-
ics
G
WARNING
Only have work on the engine electronics and
related components carried out at a qualified
specialist workshop which has the necessary
specialist knowledge and tools to carry out
the work required. Mercedes-Benz recom-
mends that you use a Mercedes-Benz Service
Centre for this purpose. In particular, work
relevant to safety or on safety-related sys-
tems must be carried out at a qualified spe-
cialist workshop. Otherwise, the vehicle's
roadworthiness could be affected.
! Only have maintenance work on the
engine electronics and its associated parts,
such as control units, sensors and connec-
tor leads, carried out at a qualified special-
ist workshop, e.g. a Mercedes-Benz Service
Centre. Vehicle components may other-
wise wear more quickly and the vehicle's
operating permit may be invalidated.
Retrofitting of two-way radios and
mobile phones (RF transmitters)
Use the Technical Specification
30
ISO/TS 21609 implementation regulation
when retrofitting RF (radio frequency) trans-
mitters.
ISO/TS 21609 – Technical Specification for Road Vehicles (EMC) guidelines for installation of aftermarket
30
radio frequency transmitting equipment.
Vehicle electronics
If your vehicle has fittings for two-way radio
equipment, use the power supply or aerial
connections intended for use with the basic
wiring. Be sure to observe the manufacturer's
additional instructions when installing the fit-
tings.
! Have aftermarket radio frequency trans-
mitting equipment installed at a qualified
specialist workshop. Mercedes-Benz rec-
ommends that you use a Mercedes-Benz
Service Centre for this purpose.
The transmission output at the aerial base
must not exceed the maximum values below.
Waveband
Short wave
(f < 54 MHz)
4 m waveband
2 m waveband
Trunked radio/Tetra 35 W
70 cm waveband
GSM 900/AMPS
GSM 1800
UMTS
The following aerial positions may be used if
RF transmitters have been properly installed:
Maximum trans-
mission output
(PEAK)
100 W
30 W
50 W
35 W
10 W
10 W
10 W
Z
371