Audi bulletin A4524442072549_3
What it saysThis bulleitn provides informationw hen the the DTCs C101AF1, C101BF1, C101CF1, C101DF1 "magnetic field too low" is stored in the ABS control unit. NHTSA’s full summary ↓
Audi filed this with NHTSA as a service bulletin dated Jun 11, 2024, received Jul 2, 2024, about the service brakes — 2 documents under this number. It names 12 model years (2022–2025). 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 the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
This bulleitn provides informationw hen the the DTCs C101AF1, C101BF1, C101CF1, C101DF1 "magnetic field too low" is stored in the ABS control unit.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| A4524442072549_3 | Service bulletin | Jun 11, 2024 | 11002966 | |
| A4524442072549_3 | Service bulletin | Jun 11, 2024 | 11002897 |
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 12 model years this bulletin names have filed 32 complaints with NHTSA since 2015. 5 of them name Service Brakes — 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 XXX while driving my 2024 Audi A3 at highway speeds on a live freeway, the vehicle suffered a sudden and catastrophic electrical system failure. The dashboard immediately displayed critical warning indicators, including "Electrical Malfunction" and "Battery Malfunction” and “Drive system Malfunction.” Without further warning, the…
2024 Audi A3 · Service Brakes · filed with NHTSA Sep 24, 2026 · ODI 11766708
Dealer is refusing to acknowledge the known BSG defect (TSB 2058831/13) and is instead attempting to charge for secondary electrical failures (ABS/AC) caused by the primary charging system failure. 2023 Audi A3 2.0T, VIN . Recurring 48V BSG (Belt Starter Generator) failure causing complete loss of power steering and brake assist.
2023 Audi A3 · Service Brakes · filed with NHTSA May 5, 2026 · ODI 11735828
My 2025 Audi A3 has been experiencing severe and recurring 'phantom braking' issues, where the vehicle violently and unexpectedly engages the emergency braking system without any obstacles present. This poses an immediate, life-threatening risk of being rear-ended at high speeds.
2025 Audi A3 · Service Brakes · filed with NHTSA Jul 15, 2026 · ODI 11750651
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 service brakes
Source: same model, same component group42 other manufacturer communications filed against these Audi models under the same component group (service brakes), newest first. The eight newest are listed; the rest are on the Audi list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB_2079459_2 | Service bulletin | Sep 14, 2026 | This bulletin provides information when the DTC U300100 is logged I n the electromechanical brake servo. |
| TSB_2077435_3 | Service bulletin | Aug 21, 2026 | This bulletin provides information when there are cracks on the friction ring surface on ceramic brake discs. |
| TSB_2069904_3 | Service bulletin | Aug 21, 2026 | This bulletin provides information for all models regarding brake sounds. |
| TSB_2069078_4 | Service bulletin | Aug 21, 2026 | This bulletin provides information on the zirconium insercts in the brake piston (ceramic brakes only). |
| TSB_2067132_4 | Service bulletin | Aug 21, 2026 | This bulletin provides information when there is corrosion on the friction survace of steel brake discs. |
| TSB_2075120_3 | Service bulletin | Aug 11, 2026 | This bulletin provides information about the general approach for brake vibration concerns. |
| TSB_2072304_4 | Service bulletin | Aug 11, 2026 | This bulletin provides information when there is an ABS/ESC speed sensor implausible signal. |
| TSB_2081760_1 | Service bulletin | Apr 22, 2026 | This bulletin provides informaiton when the ABS/ESP intervenes early at low speeds. |
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 A4524442072549_3 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 A4524442072549_3 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 A4524442072549_3 cover?
The manufacturer filed it against 12 model years: 2025 Audi A3, 2024 Audi A3, 2023 Audi A3, 2022 Audi A3, 2025 Audi RS, 2024 Audi RS and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: built in Apr 2024 — the build date is on the certification label in the driver’s door jamb.