About the project
In September 2025 to April 2026 Carabiner reviewed of the main part of the safety documentation for Polestar 5.
As required by the ISO 26262 standard at least all ASIL C and ASIL D safety work products shall undergo confirmation reviews to provide sufficient and convincing evidence for the achieved safety of a vehicle. Carabiner was selected by Polestar as independent experts to conduct the required reviews.

Carabiner’s Contribution
The Carabiner team consisted of 7 experienced functional safety engineers. The covered functional areas included Electrical drive (DC/DC, inverters, propulsion control), AD/ADAS, passive safety, propulsion control, Deceleration, High voltage/low voltage energy supply, steering and stability functions. Where possible the review comments were accompanied by suggestions for corrective actions and improvements of the reviewed documents. The tight deadline of the whole project and the complexity of a major part of the documents made the reviews and handling of the comments even more challenging.