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Self Study Programme 646 For internal use only Audi A4 Type 8W Vehicle electrics and electronics ProCarManuals.com Audi Service Training Back Forward Contents The Audi A4  type 8W is the second representative of the MLBevo They also facilitate communication between the comfort/conven Modular Longitudinal Platform evolution after the ience control units, the infotainment modules and central display Audi Q7  type 4M . A fully equipped Audi A4  type 8W has around and operating components such as the MMI and Audi virtual 90 control units on board, many of which exchange data with one cockpit. another. Such close co operation would not be possible without an So called LIN buses LIN local interconnect network comple entirely new electronics architecture compared with the ment the CAN buses by serving less complex subscriber systems Audi A4  type 8K especially when it comes to the driver assist such as the interior lighting. ance systems. The Bang   Olufsen Sound System with 3D sound uses a MOST bus MOST media oriented systems transport . As in other Audi The new FlexRay bus system in the Audi A4 networks multiple models, the Audi A4 now also has aluminium high current wires 2 2 2 control units and ensures that data is transmitted extremely with diameters of 16 mm , 35 mm and 50 mm . quickly and securely. The key components are the engine, the However, the Audi A4 is the first Audi to use aluminium wires with 2 2 2 automatic gearbox, the central suspension control unit, the Elec diameters of 2.5 mm , 4 mm and 6 mm . Thanks to these modifi tronic Stability Control ESC system, the power steering control cations, the electronics in the new Audi mid range models contrib unit, the Stop Go adaptive cruise control system including traffic ute to a lightweight design. The weight of the vehicle in this area jam assist, the video camera and the airbag control unit which has been reduced by 6 kg compared with the previous mod