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Service campaign B840226

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 campaign
NHTSA id11035408
Published by NHTSA2026-07-31
Manufacturer's numberB840226
Manufacturer's date2026-07-10
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Once the Telematics Module (TCB2) enters sleep mode, a BMW Data Services trigger for Remote Services(remote engine start, lock/unlock/climate conditioning) will not be able to reactivate the TCB2. Due to this issue, Remote Services will not function in the vehicle when parked and locked.

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 230I2020
BMW 330I2020
BMW 430I2020
BMW 530I2020
BMW 740I2020
BMW 840I2020
BMW X12020
BMW X22020
BMW X32020
BMW X42020
BMW X52020
BMW X62020
BMW X72020

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

Recalls for the same vehicles and component
25V6440002025-09-25. ELECTRICAL SYSTEM:STARTER ASSEMBLY
20254992025-09-23. Electrical
25V6360002025-09-23. ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY
20244442024-08-01. Electrical
24V5760002024-08-01. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM:STARTER ASSEMBLY
23V5840002023-08-16. ELECTRICAL SYSTEM:SOFTWARE; SEAT BELTS
20V6010002020-09-30. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20V4900002020-08-18. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; ELECTRICAL SYSTEM:12V/24V/48V BATTERY
20V4650002020-08-07. ELECTRICAL SYSTEM:STARTER ASSEMBLY; POWER TRAIN:AUTOMATIC TRANSMISSION
20V4430002020-07-29. BACK OVER PREVENTION: SENSING SYSTEM: CAMERA; ELECTRICAL SYSTEM: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
B1104262026-08-03. Service bulletin. The manual starting of electronic engine oil level measurement from inside the vehicle, usually afterperforming an engine oil service task, is inoperative or it may lock up at between a 15% to 30% completionrate.
B5211252025-08-24. Service bulletin. If the seat ventilation is deactivated via the switch or due to parking the vehicle, the fans in the seat cushionor under the seat cushion surface are unpleasantly loud. The fans speed up loudly twice and then turn off. The functionality of the fans is not impaired. This behavior only occurs after the vehicle had been programmed to I level S18A- 25-07-520 and higher; upto, but not including S18A- 25-07-551.
B7202252025-04-18. Warranty extension. The Supplemental Restraint Systems (SRS) Front Passenger’s Seat Occupancy Capacitive Interior Sensor (CIS) Mat for defects in materials and/or workmanship that causes a false seat occupancy alert to occur has been extended to 10 years / 120,000 miles as determined from the vehicle's original in-service / first delivery date.
B011920242025-01-02. Warranty extension. The Telematics Control Units (TCU) Internal Emergency (Backup) Battery for defects in materials and/or workmanship has been extended to 6 years without mileage limitation, as determined from the vehicles original first in-service / delivery date.
B0118242025-01-02. Warranty extension. The Telematics Control Units (TCU) Internal Emergency (Backup) Battery for defects in materials and/or workmanship has been extended to 6 years without mileage limitation, as determined from the vehicles original first in-service / delivery date.
B8403242024-10-19. Service bulletin. The “End of life” or “Emergency call system error” Check Control message appears in the vehicle. The following fault memory entry is stored: B7F341 – Emergency battery: Hardware faulty
B6111242024-04-01. Service bulletin. After performing a BMW Remote Software Upgrade (RSU), the functionality of the Comfort Access andPassive Go/Exit features may be reduced. Also, one or more of the following error memory entries below may be stored in the Basic Central Platform(BCP) module. 80424A Remote control receiver at the front (FBD5 VM): Programming defective 80424B Remote control receiver at the rear (FBD5 HM): Programming defective 80424C Remote control receiver at the front left (FBD5s VL): Programming defective 80424D Remote control receiver at the front right (FBD5s VR): Programming defective 80424E Remote control receiver at the rear right (FBD5s HR): Programming defective 80424F Remote control receiver at the rear left (FBD5s HL): Programming defective
B6103212024-03-02. Service bulletin. SITUATION BMW AG is conducting a Voluntary Emissions Recall (effective April 23, 2021) on a certain Model Year 2020 - 2021 BMW vehicles that were produced between August 13, 2019 and December 11, 2020. Do not deliver to a customer, a New, Certified Pre-Owned or Used vehicle subject to an emissions recall, until the vehicle is repaired. Do not use or sell replacement equipment/parts subject to an emissions recall. The 12 V battery’s dual storage system (DSS) may contain a software error which intermittently causes a continuous resetting of the microcontroller and communication failure. The error is displayed by a red Check Control message.
B6607202024-03-02. Service bulletin. The functionality of the left rear SRR sensor could be reduced which would display the Driving Assistance Check Control Message.
B6608202024-03-02. Service bulletin. The functionality of the right rear SRR sensor could be reduced which would display the "Driving Assistance"- Check Control Message.