Trailer Hitch Retrofitting (8E)

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These instructions may not cover mechanical/electronic details, they will only list the the diagnostic side (coding etc.). Additional details for the mechanical/electronic work needed are part of the retrofitting instructions provided by the parts supplier (i.e. trailer hitch retrofits) or can be found in the factory repair manuals and wiring diagrams.


Installation & Wiring

Information regarding the Installation can be found in the Repair Manuals, the Wiring Diagrams, the Parts Catalog and/or the Instructions included in the Retrofitting Kit.


Configuration

The following Activations are necessary to ensure that the newly fitted parts are properly recognized and are ready to use.

  • Update the Installation List in the Instrument Cluster (J285 / #17).
    • Using the Adaptation Function, select Channel 061 (Installation List: CAN-Databus Comfort).
    • Now add the Value 64 to your existing Value (i.e. 3331+64=3395)
    • Further Information will be displayed once you access the Adaptation Channel.
  • Update the Engine Control Module (J623 / #01) Coding.
    • Make sure that the Engine is NOT running, otherwise the new Coding will be rejected. Models equipped with Start/Stop System do have a Shutoff Switch/Button which will deactivate the Start/Stop Function.
    • For Engines with a 2nd Engine Control Module (J624 / #11) this needs to be coded as well.
    • As a Rule of Thumb, If the Engine uses conventional Short Coding (Coding is 7-digits like 0011312) the Long Codding Assistant does NOT apply. Modules using Short Coding typically do NOT support or require Trailer Configuration Coding. If the Engine Control Module uses a Long Coding the Activation is done in (Long) Coding itself through via Coding Assist. Please also note that there are different Coding Variants for Long Coding.
    • Due to different Control Modules and Equipment in the Car the actual Coding Table is not shown here but will automatically be used by the Long Coding Assistant once you access the Function using VCDS.
  • Update the Central Electronics (J519 / #09) Coding, if installed.
    • Due to different Control Modules and Equipment in the Car the actual Coding Table is not shown here but will automatically be shown once you access the Function using VCDS.
  • Update the Parking Aid (J446 / #76) Coding, if installed
    • Due to different Control Modules and Equipment in the Car the actual Coding Table is not shown here but will automatically be shown once you access the Function using VCDS.


Special Notes

  • The Audi A4 (8E/8H) with 2.0 TFSI Engine does NOT require the Engine Control Module .(ECM) to be recoded.


If you are having trouble finding/calculating the proper Coding using the Long Coding Assist please Contact us directly. Make sure to include a complete Diagnostic Protocol (Auto-Scan) from the Car and state which steps/work you have performed yet.




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