Audi service campaign 27BQ
What it saysUnder this service action, Audi dealers will replace the starter-alternator in affected vehicles at no cost to owners. NHTSA’s full summary ↓
Audi filed this with NHTSA as a service campaign dated Jan 7, 2025, received Jun 25, 2024 — 30 documents under this number: Dealer 27BQ_REV10, Circular 27BQ_REV10, Dealer 27BQ_REV9, Circular 27BQ_REV9 and 26 more. It names 51 model years (2019–2024). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
Under this service action, Audi dealers will replace the starter-alternator in affected vehicles at no cost to owners. A defective starter-alternator may inhibit start/stop functionality which could increase CO2 and other emissions while the vehicle is stopped. Emissions still remain within certification standards. Updated affected vehicle chart, owner notification letters, parts and claiming sections to reflect the addition of the final wave of vehicles. Updated work instructions (battery charger must be connected before checking starter/generator software version).
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| Dealer 27BQ_REV10 | Service campaign | Jan 7, 2025 | 11013707 | not found |
| Circular 27BQ_REV10 | Service campaign | Jan 7, 2025 | 11013704 | not found |
| Dealer 27BQ_REV9 | Service campaign | Dec 17, 2024 | 11012550 | not found |
| Circular 27BQ_REV9 | Service campaign | Dec 17, 2024 | 11012543 | not found |
| Dealer 27BQ_REV8 | Service campaign | Dec 6, 2024 | 11012549 | not found |
| Circular 27BQ_REV8 | Service campaign | Dec 6, 2024 | 11012542 | not found |
| Dealer 27BQ_REV7 | Service campaign | Nov 15, 2024 | 11011316 | not found |
| Circular 27BQ_REV7 | Service campaign | Nov 15, 2024 | 11011314 | not found |
| Dealer 27BQ_REV6 | Service campaign | Oct 24, 2024 | 11009990 | not found |
| Circular 27BQ_REV6 | Service campaign | Oct 24, 2024 | 11009985 | not found |
| Dealer 27BQ_REV5 | Service campaign | Oct 10, 2024 | 11009989 | not found |
| Circular 27BQ_REV5 | Service campaign | Oct 10, 2024 | 11009984 | not found |
| Dealer 27BQ_REV4 | Service campaign | Aug 19, 2024 | 11007370 | |
| Circ 27BQ_REV4 | Service campaign | Aug 19, 2024 | 11007367 | |
| Dealer 27BQ_REV4 | Service campaign | Aug 19, 2024 | 11007289 | |
| Circ 27BQ_REV4 | Service campaign | Aug 19, 2024 | 11007286 | |
| Dealer 27BQ_REV3 | Other | Jun 26, 2024 | 11003011 | |
| Circ 27BQ_REV3 | Service campaign | Jun 26, 2024 | 11003008 | |
| Dealer 27BQ_REV3 | Other | Jun 26, 2024 | 11002942 | |
| Circ 27BQ_REV3 | Service campaign | Jun 26, 2024 | 11002939 | |
| Dealer 27BQ_REV2 | Other | Jun 11, 2024 | 11002991 | |
| Circ 27BQ_REV2 | Service campaign | Jun 11, 2024 | 11002989 | |
| Dealer 27BQ_REV2 | Other | Jun 11, 2024 | 11002922 | |
| Circ 27BQ_REV2 | Service campaign | Jun 11, 2024 | 11002920 | |
| DC_27BQ_loaner | Other | May 24, 2024 | 11002288 | |
| DC_27BQ_loaner | Other | May 24, 2024 | 11002188 | |
| Dealer 27BQ_REV1 | Other | May 3, 2024 | 11002289 | |
| Circ 27BQ_REV1 | Service campaign | May 3, 2024 | 11002284 | |
| Dealer 27BQ_REV1 | Other | May 3, 2024 | 11002189 | |
| Circ 27BQ_REV1 | Service campaign | May 3, 2024 | 11002184 |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 4N0-903-028-S | Alternator VIN to Order | — |
| 4N1-903-028 | Alternator VIN to Order | — |
| 4N1-903-028-B | Alternator VIN to Order | — |
| 06M-121-488-A | GASKET Free Order | — |
| 06M-133-237-A | GASKET Free Order | — |
| 4M0-145-117 | SEAL RING Free Order | — |
Read by machine from the document NHTSA serves (24 pages), read Sep 30, 2026. A part number is shown only where it matches Audi’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote.
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 themand 11 more on this site: 2021 Audi S6, 2020 Audi S6, 2024 Audi S7, 2023 Audi S7, 2022 Audi S7, 2021 Audi S7, 2020 Audi S7, 2023 Audi S8, 2022 Audi S8, 2021 Audi S8, 2020 Audi S8.
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 51 model years this bulletin names have filed 613 complaints with NHTSA since 2015.
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.
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 27BQ a recall?
No. A service campaign 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 27BQ repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does 27BQ cover?
The manufacturer filed it against 51 model years: 2024 Audi A6, 2023 Audi A6, 2022 Audi A6, 2021 Audi A6, 2020 Audi A6, 2019 Audi A6 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.