Polestar Polestar 2 2021–2025 — technical service bulletin
Bulletin 37441 · NHTSA communication 11022803 · issued Aug 6, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2021–2025
model years
5
vehicle entries
Official summary
This is a Technical Journal: PS Critical Guidelines for Replacing IHU. After replacing the IHU with one of the part numbers listed above, follow the steps below: 1. Download IHU reload (select Yes for replaced HW) 2. Perform a Total Upgrade 3. Manually order and download SP 32303725
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.