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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.

Byeditor sarah mitchell1999 Audi A4
1999 Audi A4 — 1999 Audi A4 investigation
Editorial illustration generated for this article.
RQ99008Audi A4 power brake booster vacuum bypassPower brake booster vacuum bypassSERVICE BRAKES, HYDRAULIC1997 Audi A4 investigation1998 Audi A4 investigation1999 Audi A4 investigationAudi A4 brake recallNHTSA RQ990081997 Audi A4
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.

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