Service bulletins for the 2021 BMW M440i
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.
124 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: 12-volt battery are shown. Show all
| B612720 | 2021-02-22. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES. CHECKING THE JUMP START POINT COVER AND REWORKING IF NECESSARY: It is possible that the jump start terminal point cover was not installed, or not properly installed on the affected vehicles. |
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| B610121 | 2021-02-22. Service bulletin. STRUCTURE:BODY:HOOD; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. BATTERY DOES NOT CHARGE WITH EXTERNAL CHARGER AND CLOSED HOOD: After the vehicle has been charged using a 12 V charger with the hood closed during a long stationary period, the 48 V battery may be totally discharged, and possible replacement is needed. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.