Model-level range presence is a source-coverage check. It does not confirm that a repair fits every engine or model year.
Vehicle problem research
BMW 4 Series problems and repair guidance
Read 1 documented issue file for the BMW 4 Series, including symptoms, source-defined vehicle scope and the published repair or diagnostic steps. A matching model name does not diagnose your car or confirm VIN eligibility.
This profile contains problem research. Model-specific warranty cost estimates and aggregate NHTSA complaint counts are not included for this model.
Choose the exact year
BMW 4 Series model-year research
Model-year coverage varies. Each page shows the available problem files and identifies whether warranty estimates and federal report counts are included.
Problem research and repair guidance
BMW 4 Series: symptoms, affected vehicles and documented fixes
Match the symptom and the exact vehicle scope before arranging work. These files preserve the FixCatalogue research, with the manufacturer position, safe checks and original evidence available here.
1documented issue file
1vehicle system
1 recall file · 0 other manufacturer files. These are editorial file counts, not distinct campaign totals, failure rates or a complete recall history.
Transmission & drivetrain
Official safety recall2023Campaign 23V821000Powertrain defect may interrupt drive
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.
NHTSA campaign 23V821000 includes certain 2023 BMW 4 Series vehicles. 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… 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.
Symptoms to compare
- The vehicle may hesitate, shift unexpectedly or lose drive, depending on the recalled part
- An open campaign appears when the complete VIN is checked
- Some recalled vehicles may show no advance warning before the component fails
Other ways owners describe it: transmission slips; car will not move; gearbox jerks; car jumps out of gear; delayed acceleration; drivetrain warning came on.
Which vehicles the source covers
- 2023 BMW 4 Series
- NHTSA campaign 23V821000
- The manufacturer filing lists 552 potentially affected units across the complete campaign.
- VIN eligibility determines whether this recall applies to an individual vehicle
Safety recall eligibility is based on the VIN and campaign scope, not ordinary warranty mileage. Check the complete VIN even when the vehicle is outside its original warranty.
Component in the source: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
Published recall remedy
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.
Use the official recall remedyAuthorised dealer · Confirm with VIN
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.
Limit: Do not buy parts from the campaign description alone. VIN scope, superseded remedies and parts availability can change.
Check the complete VIN before arranging workBasic check · 5 minutes
Enter the 17-character VIN in NHTSA's recall lookup and ask the manufacturer or an authorised dealer to confirm whether the campaign is open for this vehicle.
Limit: A year, make and model match does not prove that every vehicle is included. The VIN result controls eligibility.
Evidence for this issue
- 23V821000: Official campaign record for BMW 4 Series
NHTSA safety recall · Dec 6, 2023
NHTSA campaign data lists the defect, safety consequence and manufacturer remedy. The manufacturer filing lists 552 potentially affected units across the complete campaign.
Confirm who pays before authorizing work
A recall remedy follows the campaign and VIN eligibility. A service bulletin provides diagnosis or repair instructions; it does not by itself promise payment. Manufacturer warranty extensions and support programs have their own conditions.
Compare recalls, bulletins and warranty extensions →Keep a current problem separate from future coverage
These files do not supply a shop quote. Ask for a diagnosis and written estimate, then check recall remedies or existing coverage. A new vehicle service contract generally excludes pre-existing conditions.
Prepare a useful description for the mechanic →Each file retains its original source review date. Historical remedy wording can change; check the current manufacturer notice and NHTSA VIN lookup for your vehicle. The separately dated NHTSA counts elsewhere on this page use a different dataset and scope.
Read the evidence for this vehicle
What can the data tell you about BMW 4 Series?
No model-specific individual-repair price keys are retained for BMW 4 Series in this library. Generic parts and labor estimates, public records and separate annual cost references may still be available.
An unmatched specification is an information gap. Do not borrow an engine or drivetrain from another year.
Recall and communication counts describe records. They cannot establish a breakdown probability or current VIN status.
Price-key audit reviewed October 12, 2026; EPA source snapshot 2026-08-07. Individual-repair ranges and annual repair-budget references are different datasets.
Cost-library audit
The evidence behind a repair estimate
In our 44-category library, 24 categories have attached published benchmarks and 20 use planning assumptions. The audit separates the appearance of a precise total from the strength and scope of its inputs.
44 repair categories in our current library; a content audit, not a market survey
See the analysis, charts and method →Campaign-reference audit
One campaign can create many entries
In the selected collection, 1,186 files with extractable identifiers refer to 771 distinct campaign IDs. The difference is a counting-unit issue, not evidence of additional unique recalls or a vehicle's failure risk.
1,200 selected recall files; campaign references extracted from their evidence fields
See the analysis, charts and method →