Audi bulletin Dealer 91FN
What it says91FN Dealer Communication - Affected vehicles will receive the latest software version via a software update. NHTSA’s full summary ↓
Audi filed this with NHTSA as a service bulletin dated Jan 18, 2024, received Feb 6, 2024, about the back over prevention. It names 2 model years (2022–2023). 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.
Get the next Audi Q4 e-tron bulletin by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communication91FN Dealer Communication - Affected vehicles will receive the latest software version via a software update. This software contains an optimized self-diagnosis function for the high-voltage battery. In addition to the software update, the high-voltage battery cells may experience an increased self-discharge. The high-voltage battery will be evaluated, and any affected high-voltage cell modules will be replaced.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| Dealer 91FN | Service bulletin | Jan 18, 2024 | 10249242 | PDF, 210 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.
Find the software for the 2023 Q4 e-tron →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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.
Email me new Audi bulletins for the Q4 e-tron
A weekly email, sent only in a week when Audi files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 38 complaints with NHTSA since 2015. 1 of them name Back Over Prevention — 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.
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 back over prevention
Source: same model, same component group5 other manufacturer communications filed against the Audi Q4 e-tron under the same component group (back over prevention), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| A9124612072873_1 | Service bulletin | Jan 30, 2024 | This bulletin provides information for when the volume control is not working with MIB3. |
| A9324392072822_1 | Service bulletin | Jan 23, 2024 | This bulletin provides information when there is a complaint about Q4 charging after combined update to 3.2.1.. |
| Circular 91EV | Service bulletin | Jan 19, 2024 | Audi has made a software update (version ME 3.2) for certain 2022 Audi vehicles manufactured within a specific period. The software update… |
| Dealer 91EV | Service bulletin | Jan 18, 2024 | Audi has made a software update (version ME 3.2) for certain 2022 Audi vehicles manufactured within a specific period. The software update… |
| A9023522059891_5 | Service bulletin | Nov 10, 2023 | This bulletin provides information for the Audi pre sense restricted function icon displayed after the engine is started. |
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 Dealer 91FN 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 Dealer 91FN 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 Dealer 91FN cover?
The manufacturer filed it against 2 model years: 2023 Audi Q4 e-tron, 2022 Audi Q4 e-tron. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.