Service bulletins for the 2021 BMW M550i
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.
165 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Transmission and driveline are shown. Show all
| B240323 | 2023-09-25. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. ?A software error may cause an unwanted pressure pulsation in the transmission during a "Remote Engine Start." |
|---|---|
| B240223 | 2023-07-24. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. 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. |
| B240223 | 2023-05-01. Service bulletin. POWER TRAIN. BMW AG has issued a Delivery Stop: Due to a software failure, there is the possibility that the transmission does not go into "sleep mode" if the car is turned off. |
| B260422 | 2023-03-20. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. There is a howling or whistling noise from under the vehicle at 30 -37 mph (50 -60 km/h) when driving after a cold start, when the outside temperature is 32 F (0 C) or lower. The noise goes away as the vehicle/driveline reaches operating temperature. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.