BMW 530E 2017–2021 — technical service bulletin
Bulletin B640617 · NHTSA communication 10186890 · issued Dec 1, 2020
Technical service bulletin
communication type
Equipment
component
2017–2021
model years
22
vehicle entries
Official summary
?AIR CONDITIONING COOLING IS INSUFFICIENT: There is insufficient or no cooling from the air-conditioner during high ambient temperatures. There also may be irregular A/C air flow from vents.
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.