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NHTSA campaign 23V821000 · manufacturer recall Toyota - 23TA14

2023 BMW and Toyota: power train recall

Transmission oil that leaks into the control unit can lead to a seizure of the transmission gears, causing a sudden loss of drive power and increasing the risk of a crash.

high 552 vehicles affected 97% reported repaired

What was reported

Source: manufacturer filing, 49 CFR Part 573
Problem BMW of North America, LLC (BMW) is recalling certain 2023 Toyota GR Supra, 3 Series Sedan (330i xDrive, M340i xDrive, M3), 5 Series Sedan (530i, 530i xDrive, M5), 4 Series Gran Coupe (430i, 430i xDrive), 4 Series Coupe (430i, 430i xDrive, M440i xDrive), 4 Series Convertible (430i, 430i xDrive, M440i xDrive), 8 Series Coupe (840i, M850i xDrive, M8), 8 Series Convertible (840i, M850i xDrive, M8), 8 Series Gran Coupe (850i xDrive, M8), X3 SAV (X3 xDrive30i, X3M), X4 SAV (X4 xDrive30i), X5 SAV (X5 xDrive40i, X5 M50i, X5M), X6 SAV (X6 xDrive40i, X6 M50i, X6M), and Z4 sDrive30i, Z4 M40i vehicles. The weld seam of the integrated transmission control unit's cover may not have been manufactured properly, which could allow automatic transmission oil to leak into the transmission control unit. Risk Transmission oil that leaks into the control unit can lead to a seizure of the transmission gears, causing a sudden loss of drive power and increasing the risk of a crash. Fix Dealers will replace the transmission mechatronics module and the automatic transmission fluid, as necessary, free of charge. Owner notification letters were mailed January 26, 2024. Owners may contact BMW customer service at 1-800-525-7417.

Reported to NHTSA Dec 6, 2023 by BMW of North America, LLC, owners notified Jan 26, 2024.

What that means, in plain English

Source: WhichTrim's reading of the filing above — not NHTSA's wording

Transmission oil leaking into the control unit can cause gear seizure and sudden loss of drive power in traffic, which is a serious crash risk but no stop-drive order was issued and the defect involves a manufacturing flaw that 'may' allow leakage rather than an immediate failure.

Written for us by a language model from the manufacturer's filed text, which is quoted in full above. Where the two differ, the filing is the record and this is only our summary of it.

Which vehicles are covered

Source: NHTSA campaign 23V821000
Model yearClassSafety SignalRecalls on file
2023 BMW 3 SeriesMidsize SedanD4
2023 BMW 4 SeriesCompact SedanC3
2023 BMW 5 SeriesMidsize SedanC3
2023 BMW 8 SeriesCoupeD4
2023 BMW X3Compact SUVD4
2023 BMW X4Compact SUVC2
2023 BMW X5Large SUVC4
2023 BMW X6Large SUVA1
2023 BMW Z4ConvertibleB2
2023 Toyota GR SupraCoupeC3

Those are the model years inside WhichTrim's range, 2016 onward. The campaign may cover others outside it, and the only thing that settles whether one specific vehicle is included is its VIN.

How much of it has been fixed

Source: manufacturer quarterly report, 49 CFR 573.7
Reported repaired 97%

of the campaign

The final figure: the six quarters of reporting that 49 cfr 573.7 requires have closed.

This is the manufacturer's own cumulative count of vehicles it has inspected and repaired, divided by the vehicles the campaign covers. It files that count with NHTSA every quarter for six consecutive quarters, starting from the quarter in which owners were told a remedy was ready, and then the obligation ends — so a figure on an older campaign is where the count stopped, not where it stands today.

It rarely reaches 100%, and not because the work was not done. The same report asks manufacturers to count vehicles they could not reach at all — exported, stolen, scrapped, or simply never located — and those stay in the denominator. A low number means a lot of these vehicles are still out there unrepaired; it does not tell you which ones.

The federal paperwork

Source: nhtsa.gov

Check one specific vehicle

A recall applies to a build range, so year, make and model cannot settle it. Type the VIN and the WhichTrim recall report checks this campaign’s build window and engine against it.

Campaign 23V821000 · the manufacturer calls it Toyota - 23TA14

Own one, or run a fleet? Recall Watch checks each VIN against every new NHTSA campaign and emails you when one lands, this one's expansions included. Or take a free one-line alert by model year.

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A recall covers a build range. Only your VIN settles it.

Check it with the WhichTrim recall report now, or have us check it every night and email you when something new is filed.

Photo: Taiga Miyamoto / Unsplash

Common questions

Source: NHTSA, 49 CFR Part 573

Is Toyota - 23TA14 the same recall as 23V821000?

Yes. Toyota - 23TA14 is the number BMW of North America, LLC uses for this campaign in its own paperwork and in the letter it sends owners. 23V821000 is the number NHTSA files it under. One recall, two references — dealers and service departments generally quote the manufacturer's.

Does this recall repair cost anything?

No. Federal law requires the manufacturer to remedy a safety defect or a compliance failure at no charge, for vehicles up to 15 years old measured from the date of first sale. A dealer that asks you to pay for a recall repair is in the wrong.

How do I know whether my vehicle is included?

By VIN, not by model year. The manufacturer files a build range with NHTSA and only vehicles inside it are covered, so two identical-looking cars from the same year can differ. NHTSA's own lookup checks a VIN against the manufacturer's list.

What if the repair is not available yet?

It happens, and often. Manufacturers must notify owners when a defect is found even if the parts or the software are not ready, then notify them a second time once the remedy exists. The remedy filed for this campaign is described above.

What did the manufacturer say was wrong?

The problem, risk and fix quoted on this page are the manufacturer's own words as filed with NHTSA under 49 CFR Part 573. WhichTrim does not paraphrase them.

Who started this recall?

NHTSA's record credits the manufacturer. A recall can begin with the manufacturer's own testing, with a defect investigation, or with a compliance test against a Federal Motor Vehicle Safety Standard.