Audi bulletin Circular 93S3
What it saysOn a small number of vehicles manufactured within a specific period, an incorrect bolt length was used for securing a connector for the high-voltage battery wiring harness. NHTSA’s full summary ↓
Audi filed this with NHTSA as a service bulletin dated Jun 6, 2023, received Jul 10, 2023, about the electrical system. It names 1 model year (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 communicationOn a small number of vehicles manufactured within a specific period, an incorrect bolt length was used for securing a connector for the high-voltage battery wiring harness. The incorrect bolt length could potentially lead to the connector coming loose, which over time could result in failure of the high-voltage system for the power unit. Replace the high-voltage battery wiring harness bolts.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| Circular 93S3 | Service bulletin | Jun 6, 2023 | 10238200 | PDF, 514 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 1 model year this bulletin names have filed 57 complaints with NHTSA since 2015. 15 of them name Electrical System — 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 digital dash screen system continually disconnects from the phone and will not reconnect. It disconnects during 911 calls. It disconnects when navigation is activated. It is very dangerous to drive a car that does this.
2023 Audi Q5 · Electrical System · filed with NHTSA Sep 20, 2025 · ODI 11688634
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 electrical system
Source: same model, same component group601 other manufacturer communications filed against the Audi Q5 under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Audi list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB_2082223_5 | Service bulletin | Sep 30, 2026 | This bulletin provides information regarding software update KD2* 03.11.00/C (28.14.01). |
| TSB_2081477_7 | Service bulletin | Sep 30, 2026 | This bulletin provides an overview of the combined software updates for cluster 3; PPE/PPC. |
| TSB_2080988_4 | Service bulletin | Sep 30, 2026 | This bulletin provides information when the rear lid only opens/clolses slightly and then stops. |
| TSB_2080076_3 | Service bulletin | Sep 30, 2026 | This bulletin provides information when there is an engine warning lamp on; DTC P157000 is logged in the ECM. |
| TSB_2079976_3 | Service bulletin | Sep 30, 2026 | This bulletin provides information when there is occasionally audio output for entertainment when the vehicle is started. |
| TSB_2079975_3 | Service bulletin | Sep 30, 2026 | This bulletin provides informaiton when the sound output pauses automatically after starting the vehicle. |
| TSB_2079974_3 | Service bulletin | Sep 30, 2026 | This bulleitn provides informaiton when there is a translucent rectangle covering the center display. |
| TSB_2079972_4 | Service bulletin | Sep 30, 2026 | This bulletin provides information when the time does not autmotically update when daylight savings time begins or ends. |
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 Circular 93S3 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 Circular 93S3 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 Circular 93S3 cover?
The manufacturer filed it against 1 model year: 2023 Audi Q5. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.