2021-2022 Audi Q8 EVAP Charcoal Filter Ticking Noise TSB

Owners of 2021-2022 Audi Q8 vehicles may notice an unusual Audi Q8 ticking noise or thumping coming from the rear passenger compartment, particularly when seated on the right side. This issue, detailed in Audi Technical Service Bulletin 2067759/1, is most prominent when the vehicle is idling.

Symptoms

Customers have reported hearing "ticking and/or thumping noises can be heard, primarily when sitting in the right rear seat." These noises are often more noticeable when the vehicle is stationary or at idling speed. If you experience this Audi Q8 ticking noise, it's important to have it diagnosed by an authorized Audi service center.

Diagnosis

Workshop findings indicate that the activated charcoal filter solenoid valve (N80), which is part of the EVAP (Evaporative Emission Control System), vibrates. This vibration is then transferred to the EVAP charcoal filter line, specifically part number 4M0 201 995 T, resulting in the audible ticking or thumping noise inside the cabin. The TSB 2067759/1 applies to Audi Q8 models equipped with the V6 3.0 TFSI engine from model years 2019-2022, though the NHTSA data specifically links it to 2021-2022 models.

Important Warnings

Audi explicitly states in this Technical Service Bulletin: "Parts replacement does not solve this issue. Claims for replaced parts will be subject to review." This means that simply replacing the activated charcoal filter solenoid valve (N80) or the EVAP charcoal filter line will not resolve the Audi Q8 ticking noise and could lead to unnecessary costs or denied warranty claims.

Repair Procedure Summary

The approved repair involves installing special sleeves (part number 4KD 201 255) onto the EVAP charcoal filter line (4M0 201 995 T) to dampen the vibrations. The number of sleeves required varies depending on the specific equipment version (PR number) of the vehicle. For example:

• Vehicles without air suspension and without rear wheel steering (PR no. 1BL) require 10 sleeves.
• Vehicles with air suspension and without rear wheel steering (PR no. 1BK, 0N1) require 8 sleeves.
• Vehicles with air suspension and with rear wheel steering (PR no. 1BK, 0N5) require 6 sleeves.

Technicians will identify the correct PR number for your vehicle to determine the precise number and placement of the sleeves. The procedure includes a road test before and after the service to confirm the resolution of the Audi Q8 ticking noise.

Required Parts

The primary part required for this repair is the sleeve, part number 4KD 201 255. Up to 10 sleeves may be needed, depending on the vehicle's specific configuration. Audi notes that the part numbers mentioned in this TSB may differ from those listed in ETKA, and technicians should only use the parts specified in this bulletin.

Warranty Information

This repair is covered under Audi's warranty for up to 48 months or 50,000 miles. For Certified Pre-Owned (CPO) vehicles, the G10 claim type applies, and owner verification is necessary. If your vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance, and any repair costs may be the owner's responsibility. The service number for this procedure is 2024, with a damage code of 0020. Labor operations include securing the sleeves to the line (operation code 2022 4999, 30 time units) and pre- and post-service road tests (operation codes 0121 0002 and 0121 0004, 10 time units each).

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Source: NHTSA ID: 10235116