2018-2021 Audi Q5/SQ5 Squeaky Brake Pedal TSB

Audi has issued Technical Service Bulletin 2067321/4 to address customer complaints of a squeaking noise when pressing the brake pedal in certain 2018-2021 Audi Q5 and SQ5 vehicles. This bulletin, dated September 14, 2022, supersedes an earlier TSB, Group 47 number 22-15, from August 3, 2022. The TSB has undergone several revisions, with revision 4 updating warranty information, and revisions 2 and 3 adding model years to the header.

The TSB specifically targets the Audi Q5 squeaky brake pedal issue, identifying the brake servo unit as the source of the noise. Owners experiencing this symptom should have their vehicle inspected by an authorized Audi service center.

Symptoms

Owners of affected 2018-2021 Audi Q5, SQ5, Q5 Sportback, and SQ5 Sportback models may notice "Squeak noises can be heard when pressing the brake pedal." Technicians can reproduce this noise, confirming it originates from the Brake Servo Unit, also known as the Brake Booster.

Technical Background

The root cause of the Audi Q5 squeaky brake pedal is identified as noise coming from the rubber boot of the brake servo unit. An improved rubber boot design was gradually introduced into production during the first quarter of 2021.

Important Warnings

Audi notes that this bulletin does not apply to PHEV (Plug-in Hybrid Electric Vehicle) models. Furthermore, dealers are warned that "Replaced Components without audio files uploaded to DOC-IT will be debited!" This means proper documentation is crucial for warranty claims.

Repair Procedure Summary

If squeaking noises are identified when pressing the brake pedal, technicians should follow these steps:

1. Record an audio file of the customer's complaint.
2. Attach this audio file to the DOC-IT database, ensuring the vehicle's VIN is included in the file.
3. Replace the Brake Servo Unit. This procedure must be performed according to the instructions found in the ELSA repair manual under ELSA>>Repair Manual>>Chassis>>Brake System>>47 Hydraulic Components>>Brake Booster/Brake Master Cylinder>>Brake Booster Removing/Installing.

Required Parts

To complete the repair, the following parts are required:

• Brake Servo Unit (Brake Booster): Part number and quantity should be referenced in ETKA/ELSA.
• Fasteners, Bolts, Nuts, and Screws: As needed per the repair manual; part numbers and quantities should be referenced in ETKA/ELSA.

Warranty Information

Warranty claims for this issue are covered under specific conditions:

• Claim Type: 110 for vehicles up to 48 months or 50,000 miles. For CPO (Certified Pre-Owned) vehicles, claim type G10 applies, and owner verification is required. If the vehicle is outside of any Audi Warranty, this bulletin serves as informational guidance only.
• Service Number: 4770
• Damage Code: 0020
• Labor Operations: The labor operation for replacing the brake servo unit is 4770 1900. Diagnostic time is GFF (0150 0000), with a maximum of 50 TU (Time Units). Road tests performed before and after the service procedure are not compensated (0 TU).
• Claim Comment: Claims must be submitted as per TSB 2067321/4 and adhere to the Audi Warranty Policies and Procedures Manual. All claims are subject to review or audit by Audi Warranty.

What Owners Should Do

If you own a 2018-2021 Audi Q5, SQ5, Q5 Sportback, or SQ5 Sportback and experience a Audi Q5 squeaky brake pedal, contact your authorized Audi dealership. Describe the symptom to them, and they will follow the procedures outlined in TSB 2067321/4 to diagnose and resolve the issue.

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Source: NHTSA ID: 10220370