Operation CHARM: Car repair manuals for everyone.

Cellular Phone: Description and Operation



General Information

Mobile telephones or portable two-way radios may not be used in the vehicle without a separate external antenna.
- Radio remote controls (e.g. for garage door opener) and wireless units (e.g. keyboard or PC mouse) may only be used in the vehicle if the transmitted output is max. 100 mW.
- Installation of CE or e-marked units is only permitted (Europe only).
- It is absolutely necessary to observe the manufacturer's operating and installation instructions for mobile telephones, two-way radios and antennas.
- The optimum unit range is only reached via an external antenna.
- When telephone and two-way radio systems are installed properly there is no danger to safety system e.g. ABS or airbag. A prerequisite is however that there has been no intervention in their installations. Parallel wiring to such systems must be prevented.
- The use of a mobile telephone or a two-way radio without or with an incorrectly installed external antenna results in increased electro-magnetic fields in the vehicle interior.
In this case detrimental affects to health or malfunctions of vehicle electronics could be the consequence.

Installation and operation of radios/telephones with a transmitted output above 10 watt for the radio communication services listed in the table is only permitted regarding the following prerequisites:
- The transmitted output on point of the antenna base must not exceed the relevant max. values (see manufacturer's designations).
- The antenna locations listed in the table must be maintained.
Transmitted output and antenna fitting locations table.