Self Study Program 970563 – The 2017 A4 Electronic and Electrical Systems

Self Study Program 970563 – The 2017 A4 Electronic and Electrical Systems PDF.  The 2017 Audi A4 is the second Audi vehicle to adapt the MLBevo (Modular Longitudinal Platform evolution). A fully equipped A4 has approximately 90 control modules, many of which exchange information with one another.

The FlexRay bus system is now used on an A4 model for the first time. It helps ensure data is transmitted quickly and securely. The key components on the FlexRay are the engine control module, the transmission control module, a new central suspension control module, the ESC, power steering control module and ACC.

In addition to the FlexRay bus CAN bus systems (CAN = controller area network) integrate the climate control system and several assistance systems such as Audi side assist and the surround cameras.

They also facilitate communication between the comfort/convenience control modules, the infotainment modules and central display and operating components such as the MMI and Audi virtual cockpit. LIN buses (LIN = local interconnect network) complement the CAN buses by serving less complex systems such as the interior lighting.

The Audi A4 now also has aluminum high-current wires with diameters of 16 mm2, 35 mm2 and 50 mm2.

It is also the first Audi to use aluminum wires with diameters of 2.5 mm2, 4 mm2 and 6 mm2. Thanks to these modifications, the weight of the vehicle in this area has been reduced by approximately 13 lb (5 kg) compared with the previous model.

Learning objectives of this Self-Study Program:

Once you have completed this eSelf-Study Program program you will be able to answer the following questions:

  • Where are the fuse and relay panels located in the Audi A4?
  • In what locations are electrical components installed on the car?
  • Which bus systems are used in the Audi A4?
  • What are the tasks of the control modules in the car?
  • What are the versions of the exterior lighting, and how are the individual light functions implemented?


  • Introduction
  • Voltage supply
    • Vehicle battery
    • Jump start terminal
    • Power distribution
    • Fuses and relays
    • Aluminum wires
  • Networking
    • Installation locations of control modules
    • Topology
    • Bus systems used on the Audi A4
  • Control units
    • Brief descriptions
  • Exterior lighting 
    • Headlight variants
    • Xenon headlight
    • LED headlight
    • Tail lights
    • High-mounted brake light / license plate lights
    • Interior lighting
    • Overhead module
  • Audi drive select
    • Functional characteristics
    • Displays and operation
    • Audi drive select function
    • Functional features
    • Anti-theft alarm
    • Central locking
    • Garage door opener (HomeLink)
    • Head-up display
  • Self-study programs
  • Knowledge assessment

This eSelf Study Program teaches a basic knowledge of the design and functions of new models, new automotive components or technologies.
It is not a Repair Manual! All values given are intended as a guideline only.
For maintenance and repair work, always refer to the current technical literature.

Language: English
Format: PDF
Pages: 66

Self Study Program 970563 – The 2017 A4 Electronic and Electrical Systems

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