2021-2023 Audi Q8 EVAP Ticking/Thumping Noise TSB

Owners of 2021-2023 Audi Q8 models equipped with the V6 3.0 TFSI engine may experience an unusual ticking or thumping noise emanating from the rear passenger compartment. This issue is specifically addressed by Audi Technical Service Bulletin (TSB) 20 23 60 2067759/2, which supersedes TSB Group 20 number 23-57 dated April 25, 2023.

This TSB provides a detailed procedure for technicians to diagnose and resolve the Audi Q8 ticking thumping noise, ensuring a quieter driving experience for affected vehicle owners.

Symptoms

Owners typically report hearing a distinct Audi Q8 ticking thumping noise. This sound is most noticeable when sitting in the right rear seat of the vehicle. The noises are primarily observed when the vehicle is idling, suggesting a vibration-related cause rather than a noise associated with vehicle movement or engine RPM changes.

Diagnosis / Trigger Conditions

The root cause of the Audi Q8 ticking thumping noise has been identified as the activated charcoal filter solenoid valve (N80). This component vibrates, and these vibrations are transmitted to the activated charcoal filter line, producing the audible ticking and/or thumping sounds within the passenger compartment.

Important Warnings

Audi explicitly states that simply replacing parts will not resolve this issue. Any claims submitted for replaced parts will be subject to review by Audi Warranty. This emphasizes that the prescribed repair procedure, which involves installing sleeves, is the correct and only effective solution.

Repair Procedure Summary

To eliminate the Audi Q8 ticking thumping noise, technicians are instructed to install specialized sleeves on the activated charcoal filter line. The specific part number for these sleeves is 4KD 201 255. The exact number of sleeves required varies depending on the vehicle's equipment version, also known as its PR number, as detailed in figures provided within the TSB.

Technicians will determine the appropriate number of sleeves (which can be 6, 8, or 10) and their precise installation locations based on the vehicle's configuration, such as whether it has air suspension or rear-wheel steering. The sleeves are fitted onto the activated charcoal filter line to dampen the vibrations originating from the N80 solenoid valve.

Required Parts

The primary part required for this repair is:

• Part Number: 4KD 201 255
• Part Description: Sleeve
• Quantity: Up to 10 (depending on the vehicle's PR number)

Warranty Information

This repair falls under specific warranty claim types. For vehicles within the standard warranty period, claims can be submitted under type 110, covering up to 48 months or 50,000 miles. For Audi Certified Pre-Owned (CPO) vehicles, claim type G10 applies, requiring verification of owner eligibility. If the vehicle is outside of any applicable warranty, this Technical Service Bulletin serves as informational guidance only.

• Service Number: 2024
• Damage Code: 0020
• Labor Operations:
  • Secure sleeves to line: 2022 4999 (30 Time Units)
  • Road test prior to service: 0121 0002 (10 Time Units)
  • Road test after service: 0121 0004 (10 Time Units)

NHTSA ID: 10236578