Bmw e61 ccc repair6/28/2023 ![]() MOST Bus's primary signal ( optical red light signal ) is generated inside of the main computer, which is your main screen CID (Control Display) or CID in E65 car only, other BMW have main computer incorporated into head unit or CCC/CIC/NBT etc), then it travels through all MOST network devices (M-ASK unit, Amplifier, Navigation GPS, AM/FM Tuner, Car Phone, etc. To start, you need to understand that all MOST multimedia modules in the car work in the closed-loop, which means if any device in the loop fails none will be working. ![]() In 2000 newer multimedia bus was introduced, called MOST (Media Oriented Systems Transport), which is a very nice and fast network designed to allow enough speed within the system and to control every multimedia device. It also cut production costs a lot because it eliminated the need for expensive and heavy copper wiring throughout the car. With fiber optic cables the sound is highly quality and more pure (no signal loss through the metal wires), so, overall a good upgrade and much more reliable. ![]() every car has different configuration, but principle is still the same! In this post we will be describing how to diagnose MOST BUS failure in any BMW, AUDI, PORSCHE, ROLLS ROYCE, RANGE ROVER HSE, BENTLEY with MOST fiber optic bus. How to find Faulty Unit on any BMW, Mercedes-Benz, Porsche, Volkswagen, Audi, etc. ![]()
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