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Service bulletin B120522

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10233155
Published by NHTSA2023-03-20
Manufacturer's numberB120522
Manufacturer's date2023-02-01
NHTSA componentPOWER TRAIN; ELECTRICAL SYSTEM

NHTSA's summary

A bearing in the front electric drive unit could fail due to a manufacturing defect, resulting in a noise while driving.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Transmission and driveline

Vehicles listed
BMW 430I2023
BMW 740I2023
BMW 760I2023
BMW I42022, 2023
BMW I72023

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
26V0560002026-01-30. ELECTRICAL SYSTEM:STARTER ASSEMBLY
25V3950002025-07-23. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION MOTOR:CONTROLLER:SOFTWARE
25V4700002025-07-16. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20235612023-10-18. Electrical
23V7000002023-10-18. ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR
23V4790002023-07-12. ELECTRICAL SYSTEM
23V4490002023-06-28. ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT
23V2950002023-04-26. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20230932023-02-24. Electrical
23V1180002023-02-23. ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
B6520252026-05-18. Service bulletin. After replacing the Multifunctional Display (MFD), the Central Information Display (CID) is black. The backlight of the CID is illuminated, and touch function does register an audible sound.
B1203262026-03-13. Emissions. BMW AG is conducting Voluntary Emissions Recall (effective March 11, 2026) on certain Model Year 2023 -2026 BMW vehicles that were produced between January 14, 2022, and September 16, 2025.
B1205232026-03-13. Service bulletin. The customer states there is a Drivetrain Malfunction message displayed in the instrument cluster. In addition, the following fault memory entries are saved in the CCU (Combined Charging Unit) 0317F2 - High-voltage system, insulation fault detected: when switch contactors are closed. 0317F1 - High-voltage system, insulation resistance below warning threshold: when switch contactors are closed. The fault memory entries (isolation faults) can occur both individually and in combination and must be traced back to the eDrive motor based on the ISTA test procedure. If ISTA test procedure lists possible cause of fault as; A metal chip is found behind the brush module (between the brush module and the end shield of the electrical machine). Repair required. Refer to service solution no. 20000794435083 in Aftersales Information Research (AIR). Follow information in the Procedure section below.
InVeh-InApp-Comm2026-02-25. Over-the-air update. A manufacturing defect in a bearing of the electronic drive unit could result in bearing damage. This is caused by an unusual acoustic signal in the area of the drive unit. The bearing could fail completely at a later stage, which will be displayed to you by means of a red Check Control message. In this case, the driver is asked to call BMW Roadside Assistance.
B6409252026-01-05. Service campaign. A faulty electric auxiliary heater may have been installed in the certain vehicles. This could result in thefailure of the electric auxiliary heater, utilized for the vehicle interior.
B1214252025-11-25. Service campaign. RSU availability. BMW AG is conducting a Service Action on certain Model Year 2025 - 2026 BMW vehicles that were produced between March 17, 2021 – November 6, 2025. In certain driving situations there can be a loss of traction or wheel slip followed by a throttle or torque requirement that can potentially damage the axle shafts. Damage of the drive shaft can cause it to break.
B8406252025-10-09. Service bulletin. In some situations, an emergency call may be triggered in the vehicle without either the customer pressing the SOS Call button, or an airbag deployment event. In some cases, the customer may not even be inside the vehicle.
B6409252025-09-03. Service campaign. A faulty electric auxiliary heater may have been installed in the certain vehicles. This could result in thefailure of the electric auxiliary heater, utilized for the vehicle interior.
B8405252025-08-24. Service bulletin. SITUATION After the telematics module (TCB4) has been replaced, the replacement part control unit is not accepted byISTA.
B6120242025-07-31. Service bulletin. In the event of a voltage drop, comfort functions of the BMW interaction bar may fail and not respond.