Support

Getting started

1. Hardware

You need a USB / OBD‑II–to‑Ethernet (ENET) adapter — the same type used for BMW coding. Any cable sold as "BMW ENET" works. On Android, a Realtek RTL8156B / RTL8153 adapter has the widest device support.

2. Connect

Plug the OBD‑II end into the car's diagnostic port and the other end into your device. Open the app and tap Scan, then connect to the car — or type the car's IP. No car? Type demo to explore the app with sample data.

3. Android: set a static IP

Unlike iOS, Android doesn't auto-assign a link-local address, so set a static IP on the Ethernet adapter in the device's network settings: IP 169.254.10.10, subnet 255.255.0.0 (prefix 16). Some devices also require a gateway and DNS — use placeholders like 169.254.10.1 and 8.8.8.8 (never used; the car is link-local). The app's connect screen shows your interface IPs and these values to copy.

FAQ

Is it safe? Can it change anything in my car?

No. Pohjannaula is strictly read-only — it sends only standard read requests and cannot modify any vehicle setting.

Does my data go anywhere?

No. Everything stays on your device. There is no account, no server, and no analytics. See the Privacy Policy.

Which vehicles are supported?

Polestar 2 and related Volvo CMA-platform vehicles.

Pohjannaula is an independent tool and is not affiliated with, endorsed by, or sponsored by Polestar or Volvo.