Audi bulletin Circ 87H9_REV1
What it saysOn vehicles manufactured within a specific period, the pressure and temperature sensors in the air conditioning system may fail. NHTSA’s full summary ↓
Audi filed this with NHTSA as a service bulletin dated Feb 23, 2024, received Mar 6, 2024, about the electrical system. It names 2 model years (2021–2022). 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 vehicles manufactured within a specific period, the pressure and temperature sensors in the air conditioning system may fail. If this happens, the air conditioning system will no longer function. Claiming instructions updated.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| Circ 87H9_REV1 | Service bulletin | Feb 23, 2024 | 10250819 | PDF, 864 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 4M0-959-603-E | SENSOR Free Order | — | eBay Motors → |
| 4KE-012-113-A | BIN VIN to Order | — | eBay Motors → |
| 4KE-863-362-B | BIN VIN to Order | — | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| R1234Y | — | 10.62 hrs |
Read by machine from the document NHTSA serves (15 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. Listings and prices on eBay Motors are the seller’s.
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.
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 sensors for the 2022 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.
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What owners reported
Source: NHTSA complaint databaseOwners of the 2 model years this bulletin names have filed 86 complaints with NHTSA since 2015. 56 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 vehicle's central locking system does not properly communicate with the keyfob resulting in the doors not unlocking as intended. I have had my child in the car seat in the back and if i accidentantly touch the handle the wrong way the doors will lock and I am unable to use the unlock feature to get my kid out.
2021 Audi e-tron · Electrical System · filed with NHTSA Dec 1, 2025 · ODI 11702257
After dealership service and recall-related calibration work, my vehicle developed multiple safety-related issues that did not exist prior to service. The dealership documented a diagnostic trouble code for “Hybrid/EV Battery Thermal Runaway Detected” (P29FF00), a critical high-voltage battery safety fault.
2022 Audi e-tron · Electrical System · filed with NHTSA Apr 9, 2026 · ODI 11730213
While driving my 2021 Audi e-tron Sportback Prestige, the high-voltage battery warning light illuminated on the dashboard. At the same time, regenerative braking stopped functioning, resulting in reduced energy recovery and a noticeable decrease in driving range.
2021 Audi e-tron · Electrical System · filed with NHTSA Jun 26, 2026 · ODI 11746695
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 group359 other manufacturer communications filed against the Audi e-tron 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_2073858_13 | Service bulletin | Sep 24, 2026 | This bulletin provides information when there are various warning messages in the instrument cluster; electric motor leaking. P0AA600 |
| TSB_2083385_1 | Service bulletin | Sep 23, 2026 | This bulletin provides information when there is a warning message in the instrument cluster about external sound. |
| TSB_2076396_3 | Service bulletin | Sep 23, 2026 | This bulletin provides information regarding driver assist systems; Audi adaptive light, Audi pre sense system fault, adaptive cruise assis… |
| TSB_2063336_5 | Service bulletin | Sep 23, 2026 | This bulletin provides information when DTC C12BFF0 is stored in the lane change modeul or the radar sensor; intersection assist/lane change… |
| TSB_2068573_6 | Service bulletin | Sep 18, 2026 | This bulletin provides information when the rear parking sensor sometimes does not work, rear parking sensor loose, rear parking sensor faul… |
| TSB_2074059_4 | Service bulletin | Sep 15, 2026 | This bulletin provides general information about SOS Emergency Assist. |
| TSB_2058077_11 | Service bulletin | Sep 15, 2026 | This bulletin provides information when there is an Audi pressense warning, warning jolt, and/or brake engagement. |
| TSB_2054202_8 | Service bulletin | Sep 15, 2026 | This bulletin provides information when there is an Audi adaptive light system malfunction; DTC C12B3FA is stored in the control module for… |
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 Circ 87H9_REV1 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 Circ 87H9_REV1 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 Circ 87H9_REV1 cover?
The manufacturer filed it against 2 model years: 2022 Audi e-tron, 2021 Audi e-tron. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.