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Service bulletin B520325

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 id11014658
Published by NHTSA2025-03-03
Manufacturer's numberB520325
Manufacturer's date2025-02-28
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

The driver’s seat heater doesn’t work after the installation of a replacement seat harness part number (P/N)52 10 7 414 701.

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 230I2025
BMW 330I2025
BMW 430I2025

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

Recalls for the same vehicles and component
20251682025-04-01. Electrical
25V2020002025-04-01. ELECTRICAL SYSTEM:STARTER ASSEMBLY; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

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
B6518262026-07-03. Service bulletin. If BMW Intelligent Personal Assistant is active in the vehicle, once the customer exits the vehicle and a newkey cycle starts, the Intelligent Personal Assistant is deactivated and no longer available.
B6517262026-07-03. Service bulletin. After a factory reset of the head unit, the navigation voice input cannot be activated or deactivated.
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
B6512262026-07-03. Service bulletin. The voice command to deactivate Automatic Engine Start/Stop function can also trigger the activation ofIconic Sounds.
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
B1203262026-07-03. Warranty extension. Due to an implementation error in various OBD diagnostics in the vehicle's control units, in very rare cases itmay happen that stored fault memory codes (DTCs) and the MIL (warning light) are not automaticallydeleted even though the underlying malfunction has already been rectified. This does not comply with the statutory OBD specifications.
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.
B6512262026-04-27. Service bulletin. After updating the vehicle to I-level …25-07-5XX, the spoken language of the navigation instructions changes from the set language for the voice assistant without the customer initiating the change.
B6509262026-04-27. Service bulletin. The customer reports that the Intelligent Personal Assistant (IPA) does not respond to the "Hey BMW" wakeup word, or to the push-to-talk (aka voice activation) button on the steering wheel. Also, various voice commands are possibly not correctly executed.
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.