2021 Audi e-tron Trailer Hitch Noise Service Action 66M2

Owners of certain 2021 Audi e-tron vehicles may notice an unexpected noise coming from the area around the trailer hitch. This issue is addressed by Audi Service Action 66M2, which involves replacing the trailer hitch cross member bolts to resolve the noise.

Symptoms

The primary symptom of this issue is an unexpected noise originating from the trailer hitch area. This Audi e-tron trailer hitch noise can develop over time and indicates a potential problem with the cross member bolts.

Repair Procedure Summary

The repair for the Audi e-tron trailer hitch noise involves a multi-step process to access and replace the trailer hitch cross member bolts. The procedure includes:

1. Interior Trim Removal: Technicians will begin by removing the side cushion upper trim panel, child seat anchors, and the rear seat bench. This requires careful handling to avoid damage to interior components.
2. Side Cushion and Tie Down Removal: The right-side side cushion and both tie-downs in the luggage compartment will be removed.
3. Luggage Compartment Access: The lock carrier trim panel and the luggage compartment side trim panel on the right side will be removed. Specific steps are outlined for both e-tron and e-tron Sportback models to ensure proper removal.
4. Gap Cover and Subwoofer Removal: The right gap cover and the subwoofer will be removed to provide full access to the trailer hitch area.
5. Bolt Replacement: The four trailer hitch cross member bolts (part number N-912-472-02) will be replaced one at a time. Each new bolt must be torqued to 80 Nm + 180°.
6. Reassembly: The vehicle will be reassembled in the reverse order of removal. Specific torque values are required for various components, including subwoofer nuts (4.5 Nm), trim panel screws (2.5 Nm), tie down bolts (9 Nm), and the lower side cushion nut (9 Nm). New rear seat bench grommets (part number 80A-886-373) and a side cushion nut (part number N-107-370-01) will also be installed.

Required Tools or Parts

To perform this service action, technicians will use specific tools and parts:

• Parts:
  • 4 x Bolt (N-912-472-02)
  • 3 x Grommet (80A-886-373)
  • 1 x Nut (N-107-370-01)
• Special Tools (or equivalent):
  • Pliers (T40172C)
  • Trim Removal Wedge (3409)
  • Pry lever (80-200)
  • Omega Clip Tool (T40280)
  • 2 x Tire Iron (locally sourced)

Owner Action

If you own a 2021 Audi e-tron and are experiencing an Audi e-tron trailer hitch noise, you should contact your authorized Audi dealer as soon as possible to schedule an appointment. This service action, identified by code 66M2, will be performed free of charge. However, it is important to note that this campaign expires on December 31, 2022. Repairs performed after this date may incur normal parts and labor costs.

NHTSA ID: 10182522