This is the case if:
R
they cause a change of the vehicle type
from that for which the vehicle's general
operating permit was granted.
R
other road users could be endangered.
R
the emission or noise levels are adversely
affected.
Always specify the vehicle identification num-
ber (VIN) (Y page 310) and the engine num-
ber (Y page 311) when ordering genuine
Mercedes-Benz parts.
Vehicle electronics
Tampering with the engine electron-
ics
G
WARNING
Always have work on the engine electronics
and related components carried out at a quali-
fied specialist workshop. Otherwise, the vehi-
cle's operating safety could be affected.
!
Only have work carried out on the engine
electronics and its associated parts, such
as control units, sensors and connector
leads, at a qualified specialist workshop.
Vehicle components may otherwise wear
more quickly and the vehicle's operating
permit may be invalidated.
Retrofitting of two-way radios and
mobile phones (RF transmitters)
G
WARNING
Incorrect retrofitting of RF transmitters can
cause the vehicle electronics to malfunction.
The vehicle's operating safety and thus your
own safety are impaired.
Have aftermarket radio frequency transmit-
ting equipment installed at a qualified spe-
cialist workshop.
G
WARNING
Incorrect retrofitting of RF transmitters can
lead to increased electromagnetic radiation in
the vehicle interior. Using an exterior aerial
takes into account current scientific discus-
sions relating to the possible health hazards
that may result from electromagnetic fields.
Have aftermarket radio frequency transmit-
ting equipment installed at a qualified spe-
cialist workshop.
!
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
the maximum permissible output in
these wavebands must be complied with.
R
the approved aerial positions must be
complied with.
The following aerial positions may be used if
RF transmitters have been properly installed:
:
Front roof area
18
;
Rear roof area
=
Rear wing
19
18
Vehicles with a panorama sliding sunroof: this area is not permitted.
19
Recommended installation position: on the side which faces the centre of the road.
Vehicle electronics
309
Technical data
Z
English 
