# Service bulletin 37441

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.

- Type: Service bulletin
- NHTSA id: 11022803
- Published by NHTSA: 2025\-09\-05
- Manufacturer's number: 37441
- Manufacturer's date: 2025\-08\-06
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's 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:\&\#13; 1. Download IHU reload \(select Yes for replaced HW\)\&\#13; 2. Perform a Total Upgrade\&\#13; 3. Manually order and download SP 32303725

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022803-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022803-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Vehicles listed

- 2021 to 2025 POLESTAR POLESTAR 2

JSON: [/v1/bulletins/11022803](/v1/bulletins/11022803)

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