I’ve been getting a Brake Booster Restricted error along with an Auto Start-Stop System Fault on my 2017 Audi A4. This happened a few times before...for those who had the same warning, did you also hear a knocking sound when braking or feel any feedback through the pedal?
Reviews of OEM Audi brake booster
PR Score
?
Shows the percentage of positive votes. Learn more in the help
4 votes
Average rating
?
The average rating is calculated only from review ratings, without votes
1 review
Description
OEM Audi
Germany
Share:
Other brake booster
Popular OEM Audi parts
What we know about OEM Audi brake booster
The brand is registered in Germany.
In March 2026, PartReview does not yet have a formed opinion of OEM Audi brake booster. You can help by adding a review for OEM Audi brake booster.
Currently there are 1 review and 4 votes. Average rating — 3 out of 5. Vote balance: 2 up, 2 down.
Users also evaluated the qualities of OEM Audi brake booster:
- Pedal effort - less force is needed for strong braking - rated negatively. 2 points out of 5.
- Hiss sound - constant hiss at the pedal hints at a vacuum leak - no rating yet
- Idle change - engine stumbles when pressing the brake if the booster leaks - no rating yet
Brake booster OEM Audi in car-specific ratings
Unfortunately, there are no car-specific ratings for this part yet. You can help by adding a review and specifying your car.