Audi bulletin AVin4Pin20230901
What it saysNoise from front door trim panel while driving Low coolant warning in cluster, coolant level is correct Check engine lamp is on, DTC (s) P010600, P023600, P023700, P023800 Leak from oil pan USB Trim detached from center… NHTSA’s full summary ↓
Audi filed this with NHTSA as a service bulletin dated Sep 1, 2023, received Oct 5, 2023, about the structure. It names 62 model years (2017–2024). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as NHTSA’s summary states it — build dates and equipment as the manufacturer filed them. The dealer checks the VIN and the build date on the door jamb; a vehicle outside the window is not covered by this bulletin.
Noise from front door trim panel while driving Low coolant warning in cluster, coolant level is correct Check engine lamp is on, DTC (s) P010600, P023600, P023700, P023800 Leak from oil pan USB Trim detached from center console 3.0L engine sound generator malfunctioning Valve cover leaking oil Fuel pressure low. DTC P008700 Check engine lamp, Belt Starter Generator DTC U046900 symptom 26950 "Check engine lamp on, DTC P042000: Catalyst System,Bank1 Efficiency Below"
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| AVin4Pin20230901 | Service bulletin | Sep 1, 2023 | 10242978 | PDF, 233 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
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Model years it names
Source: as the manufacturer filed themand 22 more on this site: 2021 Audi Q8, 2020 Audi Q8, 2019 Audi Q8, 2023 Audi RS, 2023 Audi RS Q8, 2023 Audi S4, 2022 Audi S4, 2021 Audi S4, 2020 Audi S4, 2019 Audi S4, 2023 Audi S5, 2022 Audi S5, 2021 Audi S5, 2020 Audi S5, 2019 Audi S5, 2023 Audi SQ5, 2022 Audi SQ5, 2021 Audi SQ5, 2023 Audi e-tron, 2022 Audi e-tron, 2021 Audi e-tron, 2023 Audi e-tron GT.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 62 model years this bulletin names have filed 1,564 complaints with NHTSA since 2015. 366 of them name Engine, Structure — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2020 Audi Q3, the 18 owners who gave an odometer reading for Engine reported it at a median of 2,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
The first time, while driving at 50-55mph, the engine decelerated suddenly. After about 10-15 seconds struggles with the gas pedal and brake pedal, the car accelerated normally. I pulled safely to side of the road to shut off the engine and start again. Things seemed to work like normal. The control panels did not show any warning signs.
2021 Audi A7 · Engine · filed with NHTSA Apr 5, 2026 · ODI 11729313
Upon starting the vehicle while parked on 10/18/2025, dashboard displayed warning: "Turn off engine and check coolant level. See owner's manual." Visual inspection revealed coolant residue on mechanical coolant pump switching valve N649 on cylinder head bank 1, indicating water pump internal seal failure allowing coolant to leak into…
2019 Audi S5 · Engine · filed with NHTSA Dec 5, 2025 · ODI 11703321
The car was at the dealership for a second time due to an emissions issue. While there the coolant light came on. After paying for a second evaluation, it was determined that the water pump was failing. Because of the water pump design, coolant migration occurred which can ultimately lead to turbo failure or catastrophic issues.
2022 Audi SQ5 · Engine · filed with NHTSA Sep 20, 2026 · ODI 11765703
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the structure
Source: same model, same component group257 other manufacturer communications filed against these Audi models under the same component group (structure), newest first. The eight newest are listed; the rest are on the Audi list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB_2079787_3 | Service bulletin | Sep 21, 2026 | This bulletin probides information when there is moisture in the footwell, a musty smell in the passenger compartment. |
| TSB_2080959_4 | Service bulletin | Sep 18, 2026 | This bulletin provides information when the rear lid does not close, and opens again. |
| TSB_2079213_4 | Service bulletin | Sep 18, 2026 | This bulletin provides information when the glass roof flickers. |
| TSB_2078648_4 | Service bulletin | Sep 18, 2026 | This bulletin provides information about billing for a broken sunroof glass panel. |
| TSB_2079747_3 | Service bulletin | Sep 17, 2026 | This bulletin provides information regarding various complaints about front or rear door locks. |
| TSB_2073030_3 | Service bulletin | Sep 17, 2026 | This bulletin provides information when there scraping/knocking noises from the wheel housing at the bumper cover. |
| TSB_2082875_1 | Service bulletin | Sep 14, 2026 | This Pending Service Solution (PSS) requests that technicians enter a record in the PSS databse in instances where the rear lid does not ope… |
| TSB_2073860_2 | Service bulletin | Sep 14, 2026 | This bulletin provides information when there are stails/marks on the sill panel trim. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Audi, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Audi AVin4Pin20230901 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the AVin4Pin20230901 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does AVin4Pin20230901 cover?
The manufacturer filed it against 62 model years: 2024 Audi A3, 2023 Audi A3, 2022 Audi A3, 2023 Audi A4, 2023 Audi A5, 2022 Audi A5 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.