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Whether the engine fuel system, the dual clutch gearbox, the The fi rst part of this self study programme summarises the infotainment system or any one of a number of driver assistance onboard power supply of the Audi A3 ’13 and provides information systems a modern vehicle would cease to function without on the functions, installation locations and specifi c features of electrical and electronic equipment. numerous control units. A high performance alternator, a battery rated for the vehicle s The design and function of the various headlight and tail light specifi cation, and reliable and fast data transfer across various versions are described in Exterior lighting . data bus systems are all vital components of a stable and effi cient This is a quick and direct way to obtain an in depth knowledge of onboard power supply system. the electrical and electronic equipment in the Audi A3 ’13. 610 070 Learning objectives of this Self Study Programme After you have worked your way through this Self Study Pro Which bus systems are used in the Audi A3 ’13 gramme, you will be able to answer the following questions What are the tasks of the control units in the vehicle What are the versions of the exterior lighting and how are the Where are the fuseholders located in the Audi A3 ’13 and what individual light functions implemented are their designations What are the versions of the headlight range adjustment Where are electrical components fi tted in the vehicle system 2 Contents Power supply Battery 4 Battery housing 4 Fuses, relays and jump start terminal 5 Networking Installation locations of control units 6 Topology 8 Overview of bus systems 10 New features of the bus system 10 Optical data bus system MOST150 11 Optical replacement control unit VAS 6778 11 Control units Brief descriptions 12 Exterior lighting Light switch 29 Headlights 30 Fog light 35 Headlight range control 37 Tail lights 40 Hi