BMW iX 2023–2024 — technical service bulletin
Bulletin B640324 · NHTSA communication 11000511 · issued May 23, 2024
Technical service bulletin
communication type
Engine
component
2023–2024
model years
2
vehicle entries
Official summary
Delivery stop: coolant changeover valve
Vehicles covered
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.