Audi A4 Owners & Service Manuals

Audi A4: Trailer Hitch

Audi A4 (B9) 2016-2026 Service Manual / Body / Body Exterior / Exterior Equipment / Trailer Hitch

Overview - Trailer Hitch

Overview - Trailer Hitch

1 -  Information Label

  • On the left side of the body at the rear

2 -  Towing Recognition Control Module -J345-

  • Removing and installing. Refer to → Chapter "Towing Recognition Control Module -J345-, Removing and Installing".

3 -  Trailer Hitch Release Button -E754-

  • Removing and installing. Refer to → Electrical Equipment; Rep. Gr.96; Controls; Component Location Overview - Luggage Compartment Controls.

4 -  Trailer Socket -U10-

  • Removing and installing. Refer to → Electrical Equipment General Information; Rep. Gr.96; Trailer Hitch.

5 -  Trailer Hitch

  • Only removable with the impact member
  • Removing and installing. Refer to → Chapter "Overview - Impact Member".

Towing Recognition Control Module -J345-, Removing and Installing

Removing

- Open the left service cover. Refer to → Body Interior; Rep. Gr.70; Luggage Compartment Trim Panels; Overview - Luggage Compartment Side Trim Panel.

- Disconnect the connectors -4 through 7-.

- Release the retainers -1- in the direction of -arrows- and remove the Towing Recognition Control Module -J345--2- from the bracket -3-.

A66-11751

Installing

Install in reverse order of removal.

Special Tools

Special tools and workshop equipment required

  • Engine/Gearbox Jack - Gearbox Support -T10337-

W00-10418

  • Wedge Set -T10383-
  • Wedge 1 -T10383/1-

W00-11251

  • Socket - Torx T50 -T10470-

W00-10985

  • Body Socket -T40078-

W00-10239

  • Double Suction Lifter -VAG1344-

W00-0530

  • Wiring Harness Repair Set - Hot Air Blower -VAS1978/14A-

W00-11403

  • Angled Screwdriver -VAS6416-

W00-10739

  • Engine and Gearbox Jack -VAS6931-

W00-11607

  • Roller -3356-

W00-0202

  • Trim Removal Wedge -3409-

W00-11118

Revision History

DRUCK NUMBER: A005A014621

Revision History

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     Body Interior

     General, Technical data

     Safety Precautions

    Safety Precautions when Working on Vehicles with Start/Stop System There is a risk of injury due to the engine starting unexpectedly. The engine can start unexpectedly on vehicles with an activated

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     Outer CV Joint, Checking

    It is necessary to disassemble the joint whenever replacing the grease or if the ball surfaces show wear or damage. Disassembling - Mark the position of the ball hub -2- to ball cage -3- and to housing -1- before disassembling, using an electric engraver or grindstone. - Tilt the ball h

     Finding Leaks via Vacuum Test using A/C Service Station or Nitrogen Pressure Testing

    Vehicles with a High Voltage System (Hybrid Vehicles) Read and follow all of the supplemental warnings for all work performed on vehicles with the high voltage system. Refer to → Chapter "Warnings when Working on Vehicles with High Voltage System" and → Electrical Equipment; 

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