Audi bulletin A3423642067653_4
What it saysThis bulletin provides instructions for when "Gearbox Malfunction" and/or vehicle does not shift up or down, and/or vehicle is in limp mode home, and/or "reverse gear is unavailable" displayed in the instrument cluster… NHTSA’s full summary ↓
Audi filed this with NHTSA as a service bulletin dated Nov 1, 2023, received Dec 6, 2023, about the engine. It names 11 model years (2020–2023). 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 communicationThis bulletin provides instructions for when "Gearbox Malfunction" and/or vehicle does not shift up or down, and/or vehicle is in limp mode home, and/or "reverse gear is unavailable" displayed in the instrument cluster, and/or "You can continue driving (functions limited" with DTCs P071800 and/or P276800 and possible in combination with DTC P081100 and/or P081E00.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| A3423642067653_4 | Service bulletin | Nov 1, 2023 | 10245527 | PDF, 455 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.
Model years it names
Source: as the manufacturer filed themA 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 11 model years this bulletin names have filed 443 complaints with NHTSA since 2015. 57 of them name Engine — 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.
The vehicle at 13,xxx miles on the high ways, and during stop & go traffic; vehicle begins to tremble, transmission and floor shakes, rpms are higher than normal, abnormal noises coming from engine (screeching), jerking on acceleration on the first gears, rough idle, happens only on highways after 1hr of driving.
2021 Audi A4 · Engine · filed with NHTSA Apr 1, 2025 · ODI 11652167
Our vehicle started jerking when it transitioned from EV mode to Hybrid (gas engine). I found TSB 2079556, which describes exactly the diagnostic codes our car has for all eight battery packs. This is clearly a known problem, and as the car is out of its original warranty I would have to pay for this myself.
2020 Audi Q5 · Engine · filed with NHTSA Nov 7, 2025 · ODI 11698217
The contact owns a 2022 Audi A4. The contact stated that while driving 70 MPH, the vehicle stalled in the middle of the roadway and failed to restart. There was no warning light illuminated. The vehicle was towed to the used car dealer where it was purchased.
2022 Audi A4 · Engine · filed with NHTSA Mar 17, 2026 · ODI 11724901
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 engine
Source: same model, same component group185 other manufacturer communications filed against these Audi models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Audi list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB_2079927_3 | Service bulletin | Sep 30, 2026 | This bulletin provides information when the exhaust emissions warning lamp lights up; DTC P050A; 2.0 ltr 4-cyl. |
| TSB_2083393_1 | Service bulletin | Sep 25, 2026 | This bulletin provides information when the starter/generator drive belt is noisy or came off. |
| TSB_2079911_4 | Service bulletin | Sep 25, 2026 | This bulletin provides information when the MIL is on; DTC P050600 with Symptom 4008 stored in ECM V6 TFSI. |
| TSB_2069531_2 | Service bulletin | Sep 25, 2026 | This bulletin provides information when the MIL is on, EVAP pressure/temp sensor incorrect DTC displayed: P202400, P045000, P045200, P24D600… |
| TSB_2083287_1 | Service bulletin | Sep 18, 2026 | This Pending Service Solution (PSS) requests that technicians create a record in the PSS database when DTC P001400 camshaft position is stor… |
| TSB_2081030_4 | Service bulletin | Sep 14, 2026 | This bulletin provides information when there is an abnormal knocking noise from the engine compartment; V6 3.0L TFSI. |
| TSB_2083125_1 | Service bulletin | Aug 27, 2026 | This Pending Service Solution (PSS) requests that technicians create a record in the PSS database when there is a drive system fault; fuel p… |
| TSB_2082285_2 | Service bulletin | Aug 27, 2026 | This repair authorization requests that technicians open a ticket with the Technical Assistance Center in instances where the DTC P060C00 i… |
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 A3423642067653_4 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 A3423642067653_4 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 A3423642067653_4 cover?
The manufacturer filed it against 11 model years: 2023 Audi A4, 2022 Audi A4, 2021 Audi A4, 2020 Audi A4, 2023 Audi A5, 2023 Audi A6 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.