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Manufacturer communication · Service bulletin

Audi bulletin A4524372072549_1

What it saysThis bulletin provides information for when DTC C101AF1, C101BF1, C101CF1, C101DF1 are stored in the ABS control unit with the message "magnetic field too low". NHTSA’s full summary ↓

Audi filed this with NHTSA as a service bulletin dated Jan 12, 2024, received Feb 6, 2024, about the electrical system. It names 12 model years (2021–2024). 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 communication

This bulletin provides information for when DTC C101AF1, C101BF1, C101CF1, C101DF1 are stored in the ABS control unit with the message "magnetic field too low".

Kind Service bulletin Manufacturer date Jan 12, 2024 Received by NHTSA Feb 6, 2024 Components Electrical System

Document filed under this number

DocumentKindDatedNHTSA idAt NHTSA
A4524372072549_1Service bulletinJan 12, 202410249151PDF, 327 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 them

Also filed against model years this site has no page for: 2021 Audi A3; 2021 Audi RS3.

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 database

Owners of the 10 model years this bulletin names have filed 25 complaints with NHTSA since 2015. 14 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.

BSG/alternator faulty. Started displaying “electrical malfunction!” Had to stop immediately before immediate shut down on road. Problem had been known on hybrid models of Audi specially larger models. Recall/TSB have been opened for those vehicles. Vehicle was inspected by dealership. No prior warning other than that immediate red warning

2023 Audi A3 · Electrical System · filed with NHTSA Sep 21, 2026 · ODI 11765831

The contact owns a 2023 Audi A3. The contact stated while driving 70 MPH, the contact observed a RED triangle icon, and the message "Electrical System Malfunction Defect - Low Charge" was displayed. The contact stated that the vehicle then lost motive power. The vehicle was steered over to the side of the road and stalled.

2023 Audi A3 · Electrical System · filed with NHTSA Feb 18, 2025 · ODI 11643339

2022 Audi S3 (8Y), ~35,000 miles. Vehicle developed “Gear selector malfunction. You may continue driving.” Dealer stated failure would eventually leave vehicle stranded. Gear selector replaced under partial goodwill. Immediately afterward, vehicle began experiencing communication faults U123100 and U123000 gateway module.

2022 Audi S3 · Electrical System · filed with NHTSA Feb 6, 2026 · ODI 11716117

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 group

540 other manufacturer communications filed against these Audi models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Audi list.

NumberKindDatedNHTSA’s summary
TSB_2081723_3Service bulletinSep 25, 2026This bulleti provides informaitpon wheh the electric drive system warning lamp lights up; DTCs under 008C.
TSB_2083385_1Service bulletinSep 23, 2026This bulletin provides information when there is a warning message in the instrument cluster about external sound.
TSB_2076396_3Service bulletinSep 23, 2026This bulletin provides information regarding driver assist systems; Audi adaptive light, Audi pre sense system fault, adaptive cruise assis…
TSB_2063336_5Service bulletinSep 23, 2026This bulletin provides information when DTC C12BFF0 is stored in the lane change modeul or the radar sensor; intersection assist/lane change…
TSB_2068573_6Service bulletinSep 18, 2026This bulletin provides information when the rear parking sensor sometimes does not work, rear parking sensor loose, rear parking sensor faul…
TSB_2081074_2Service bulletinSep 15, 2026This bulletin provides information when the front assist intervenes.
TSB_2074059_4Service bulletinSep 15, 2026This bulletin provides general information about SOS Emergency Assist.
TSB_2058077_11Service bulletinSep 15, 2026This bulletin provides information when there is an Audi pressense warning, warning jolt, and/or brake engagement.

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.

Photo: Christian Buehner / Unsplash

Common questions

Source: NHTSA, 49 CFR 579.5

Is Audi A4524372072549_1 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 A4524372072549_1 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 A4524372072549_1 cover?

The manufacturer filed it against 12 model years: 2024 Audi A3, 2023 Audi A3, 2022 Audi A3, 2024 Audi RS, 2023 Audi RS, 2022 Audi RS and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.