25 If mobile telephones and transmitting equipment are used, the following points must be taken into account: The use of mobile telephones or transmitters without a separate outside aerial may cause excessively high electromagnetic fields in the cab interior (resonance effect). In this case, there may be interference to the operation of the vehicle electronics. - Moreover, an outside aerial is necessary in order to achieve the maximum range of the equipment. In order to meet the warranty conditions and guarantee the service life, safety and reliability, the use of non original components, sensors and engine management units/software is not permitted.
The application of engine management software that has not been approved will adversely affect critical systems in terms of the safety of the vehicle, the braking system for instance. - Mobile telephones or transmitters must not be used in the vehicle without a separate outside aerial! Note: It is important to observe the instructions for use of mobile telephones and transmitters! Warnings and Safety Regulations Mobile telephones and transmitters Original components }