BMW iX 2021–2026 — technical service bulletin
Bulletin B511325 · NHTSA communication 11024207 · issued Sep 29, 2025
Technical service bulletin
communication type
Structure
component
2021–2026
model years
6
vehicle entries
Official summary
There are two possible situations: When opening either the front and/or rear door, the door window glass does not lower (short drop). When closing either the front and/or rear door, the door window glass does not roll up into the seal but rests outsidethe seal.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.