1997-1999 Audi A4 Power Brake Booster Vacuum Bypass Recall
The National Highway Traffic Safety Administration (NHTSA) conducted investigation RQ99008 into the 1997-1999 Audi A4 regarding potential issues with the power brake booster vacuum bypass. This investigation ultimately resulted in a recall to address the safety concern.

S'applique également à
- Audi A4
- 1997–1998
The National Highway Traffic Safety Administration (NHTSA) initiated investigation RQ99008 concerning the power brake booster vacuum bypass system in certain 1997-1999 Audi A4 vehicles. This inquiry, known as a Recall Query (RQ), aimed to determine the scope and severity of potential issues with the SERVICE BRAKES, HYDRAULIC component.
NHTSA's Findings So Far
The NHTSA investigation RQ99008 concluded that a safety-related defect existed. The status of this investigation indicates that it led directly to a recall. This means that the concerns identified during the 1999 Audi A4 investigation were significant enough to warrant corrective action by the manufacturer.
Scope
This investigation specifically focused on the power brake booster vacuum bypass in 1997, 1998, and 1999 Audi A4 models. The component under scrutiny was the SERVICE BRAKES, HYDRAULIC system, particularly how the vacuum bypass affected its operation. The findings from this 1999 Audi A4 investigation impacted these specific model years.
Status
Investigation RQ99008 was classified as a Recall Query (RQ). This type of investigation is typically opened when there is evidence suggesting a potential safety defect that may require a recall. In this case, the investigation's status confirms that it resulted in a recall being issued for the affected vehicles.
What It Could Mean for Owners
Owners of 1997-1999 Audi A4 vehicles should be aware that this investigation led to a recall. It is crucial to check if your specific vehicle has any open recalls related to the power brake booster vacuum bypass or the SERVICE BRAKES, HYDRAULIC system. You can typically do this by entering your Vehicle Identification Number (VIN) on the NHTSA website or contacting an authorized Audi dealership.
Source: NHTSA RQ99008
Frequently Asked Questions
- What is NHTSA investigation RQ99008 about?
- NHTSA investigation RQ99008 focused on potential issues with the power brake booster vacuum bypass system in 1997-1999 Audi A4 vehicles, which ultimately led to a recall.
- Which Audi A4 models are affected by the power brake booster vacuum bypass issue?
- The investigation and subsequent recall apply to 1997, 1998, and 1999 Audi A4 models concerning the power brake booster vacuum bypass component.
- How can I check if my Audi A4 is part of this recall?
- You should check for open recalls by entering your vehicle's VIN on the NHTSA website or contacting an authorized Audi dealership to see if your 1997-1999 Audi A4 is affected by the recall stemming from investigation RQ99008.
Related Articles
2023 Audi Q5 Health Check: Recalls and Bulletins
The 2023 Audi Q5 has no reported recalls, owner complaints, or federal investigations. However, Audi has issued several technical service bulletins (TSBs) addressing various potential issues, including engine faults, electrical system warnings, and airbag system concerns. This article details…
2025 Audi Q5 Health Check: Service Bulletins and Common Issues
The 2025 Audi Q5 has no reported recalls, owner complaints, or federal investigations. However, a series of manufacturer service bulletins address various electrical system, software, and component-related issues, providing insights into potential concerns for owners.
2024 Audi Q5 Health Check: Service Bulletins and Common Issues
The 2024 Audi Q5 has no reported recalls or owner complaints, but several manufacturer service bulletins address issues like the EPC light, 12V battery discharge, and airbag warning lights. These TSBs outline specific diagnostic and repair procedures for technicians.
2022 Audi e-tron Problems: Electrical System & Braking Concerns
The 2022 Audi e-tron has faced significant owner complaints regarding its electrical system, including sudden power loss and charging hazards, as well as various braking malfunctions. This profile details these issues and relevant service bulletins.
2025 Audi Q7 Problems: TSBs and Common Issues
For the 2025 Audi Q7, there are no reported recalls or owner complaints to date. However, Audi has issued several technical service bulletins (TSBs) addressing various potential issues, from engine performance and electrical glitches to interior noises and body structure concerns.
Leave a comment
Comments are moderated and may take a moment to appear. Only your first name and the initial of your last name are shown publicly.
Comments
Be the first to comment.