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Service bulletin B840525

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 id11022119
Published by NHTSA2025-08-24
Manufacturer's numberB840525
Manufacturer's date2025-08-13
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

SITUATION After the telematics module (TCB4) has been replaced, the replacement part control unit is not accepted byISTA.

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

Vehicles listed
BMW 430I2023, 2024, 2025
BMW IX2023, 2024, 2025

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
25V2020002025-04-01. ELECTRICAL SYSTEM:STARTER ASSEMBLY; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
23V4490002023-06-28. ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT
23V2950002023-04-26. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
23V1180002023-02-23. ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE
22V9440002022-12-20. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY THERMAL:MANAGEMENT:SOFTWARE
22V7410002022-10-05. ELECTRICAL SYSTEM:PROPULSION SYSTEM
22V5410002022-07-27. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY

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
B6305262026-09-28. Service bulletin. After programming the vehicle via ISTA/RSUto I-level …26-03-5xx, customer may reportsome of the interior ambient lighting strips(arrows) may begin to fail sporadically after adeep sleep cycle. This concern is temporary and the interiorambient lighting will be restored on its ownafter the vehicle is locked/unlocked or colorselection setting is changed.
B6116262026-08-28. Service campaign. In vehicles equipped with the Roof Function Center “FZD‑21” variant, a quiescent‑current violation mayoccur if the system fails to enter sleep mode. When this sleep error is present, a remote software upgrade(RSU) may be aborted and the FZD can become degraded. The following Check Control Messages (CCMs) may be displayed: “Energy Management — Increased Energy Consumption While Parked.” “Software Upgrade Failed — Workshop Visit Required.”
B6408252026-08-27. 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, utlized for the vehicle interior.
B6520262026-07-31. Service bulletin. The Central Information Display (CID) side of the Multifunction Display (MFD) may flicker intermittently. Theflickering manifests itself in three phases: The image is distorted The central information display turns black (black screen) The image is OK again The complete flickering episode with all the above-mentioned three phases only lasts about half a second intotal each time.
B6514262026-07-03. Service bulletin. The vehicle may experience various operational issues with Apple CarPlay Projected Modes such as: Dropped connections No automatic reconnection Display errors
B6106262026-07-03. Service bulletin. Charging sessions cannot be started or they are interrupted while using a Level 2 AC high-power chargingstation, or with a Level 3 DC charging station. Charging may start normally but can interrupt after some time. Level 2 (240 V) Flex Charger and Wall boxmay also be affected. The red or white LED is displayed on the high-voltage charging socket; however, no associated fault codesare stored.
B6101262026-07-03. Service bulletin. During vehicle start-up the Secure Element (SE) of the BCP may fail causing communication errors. TheCheck Control message “Drive carefully. Driving stabilisation.” will appear. In addition, the fault memoryentries below will be stored within 40 seconds of each other. ACSM: 02010A - Coding: Coding data not qualified VIP: 02390A - VIP control unit: Coding data not released, signature IB: 02290A - DSC control unit: Coding data not released, signature HKFM: 020D0A - HKFM: Coding data are not qualified
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.
B6106262026-04-27. Service bulletin. Charging sessions cannot be started or they are interrupted while using a Level 2 AC high-power charging station, or with a Level 3 DC charging station. Charging may start normally but can interrupt after some time. Level 2 (240 V) Flex Charger and Wall box may also be affected. The red or white LED is displayed on the high-voltage charging socket; however, no associated fault codes are stored.
InVeh-InApp-Comm2026-03-30. Over-the-air update. It has been determined that the Telematics Control Unit for the vehicle’s backup antenna may not have been programmed correctly. If the main antenna is damaged, the backup antenna may not be available due to the faulty programming. To correct this issue, the vehicle will need to be reprogrammed.