Vehicle electronics
Tampering with the engine electronics
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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 recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop. The vehicle's roadworthiness could otherwise be affected.
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Only have work done on the engine electronics and its associated parts, such as control units, sensors and connector leads, carried out at a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre. Otherwise, vehicle components may wear more quickly and the warranty and vehicle's general operating permit may be invalidated.
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Retrofitting electrical and electronic equipment
Electrical and electronic equipment can jeopardise the operating safety of your vehicle. If equipment of this kind is retrofitted, it must be type-approved and bear the e mark. The e mark may be obtained from the equipment manufacturer or an authorised testing centre.
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Damage caused by or as a consequence of fitting equipment that is not approved by Mercedes-Benz is not covered by the Mercedes-Benz warranty.
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If you wish to install two-way radios in the vehicle, you must obtain formal approval. Mercedes-Benz approves the installation of two-way radios if such equipment is installed professionally and a low-reflection exterior aerial is used.
The transmission output of the two-way radio must not exceed the maximum transmission outputs listed.
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Two-way radios may interfere with the vehicle electronics and thereby jeopardise the operational safety of the vehicle and your own safety if:
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they do not have an exterior aerial
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the exterior aerial is not a low-reflection aerial
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the exterior aerial has been fitted incorrectly
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Excessive electromagnetic radiation may also cause damage to your health and the health of others. Using an exterior aerial takes into account current scientific discussions relating to the possible health hazards that may result from electromagnetic fields.
For this reason, only have the exterior aerial fitted at a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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To ensure optimum reception quality for mobile phones and two-way radios in the vehicle, and to minimise mutual interference between the vehicle electronics and mobile phones/two-way radios, Mercedes-Benz recommends the use of approved exterior aerials. An attached exterior aerial conducts the electromagnetic fields transmitted by a wireless device to the exterior of the vehicle; then the field strength within the vehicle interior is lower than in a vehicle without an exterior aerial.
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Frequency range
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Maximum transmission output (watts)
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Short wave (< 50 MHz)
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100
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4 m waveband
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20
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2 m waveband
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50
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70 cm waveband
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35
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25 cm waveband
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10
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If electrical or electronic equipment which does not fulfil these conditions is retrofitted, the vehicle's general operating permit may be invalidated (EU Directive
95/54/EC the Automotive EMC Directive).
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