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Service bulletin B340121

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 id10187475
Published by NHTSA2021-02-22
Manufacturer's numberB340121
Manufacturer's date2021-01-01
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)

NHTSA's summary

DYNAMIC STABILITY CONTROL (DSC) UNIT DOES NOT RESPOND AFTER PROGRAMMING: After programming the vehicle using ISTA, the DSC control unit does not respond. Or: In the case of a BMW Remote Software Upgrade, the customer gets a Check Control message: "BMW Remote Software Upgrade failed. Vehicle is not operational. Please call BMW Roadside Assistance."

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

Driver assistance, Electrical system, Software

Vehicles listed
BMW 530E2018, 2019, 2020, 2021
BMW 530I2017, 2018, 2019, 2020, 2021
BMW 540D2018, 2019
BMW 540D2020
BMW 540I2017, 2018, 2019, 2020, 2021
BMW C 400 X2018
BMW F800 R2017
BMW M52018, 2019, 2020, 2021
BMW M550I2017
BMW M550I2018, 2019, 2020, 2021

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

Recalls for the same vehicles and component
18V3230002018-05-16. ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

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
B2402232023-07-24. Service bulletin. BMW AG has issued an Emissions Recall (effective March 17, 2023) on a certain Model Year 2021 - 2023 BMW vehicles that were produced between June 16, 2020, and December 13, 2022. Due to a software failure, there is the possibility that the transmission does not go into "sleep mode" if the car is turned off.
B0902212023-07-24. Service bulletin. With the introduction of the BMW Remote Software Upgrade, all Service Pack 18 vehicles and partial Service Pack 15 vehicles may receive new functionality or modifications in their features.
B6203222022-12-12. Service bulletin. After programming, the customer may complain that the Sport Mode display is not fully displayed in the instrument cluster. Instead of a red background in sport mode, the background is displayed in blue (like ECO PRO mode).
SIB0901212022-07-18. Service bulletin. BMW offers a new special ISTA Installation made available for Roadside Assistance / Mobile Service technicians. The new ISTA Version is also able to be used in case of a Remote Software Upgrade (RSU) programming failure to get the customer car reprogrammed on site. In case of a Remote Software Upgrade failure, the engine start is prevented for safety reasons until the vehicle is programmed correctly. Most of the errors occur when only one control unit fails to program correctly.
B6202222022-05-31. Service bulletin. Sport mode is not displayed correctly in the instrument cluster. Instead of a red background in sport mode, the background is displayed in blue (like in Eco Pro mode). Software in the instrument cluster (Kombi).
B6116212021-12-20. Service bulletin. The "energy management" Check control message (ID code 415) is falsely displayed when entering the vehicle.
SIB1204212021-12-13. Service bulletin. A software optimization affecting vehicle performance has been made available.
SIB 62 03 212021-10-25. Service bulletin. When the vehicle is operated in Sport Mode, the engine speed is no longer displayed in the BMW Head-Up Display (HUD).
B6511212021-08-09. Service bulletin. SiriusXM satellite radio is not working and does not display a channel list.
B6202212021-08-09. Service bulletin. The total electrically driven miles are lost/reset after the vehicle is programmed. This does not affect the total vehicle odometer reading.