What is safe, and what is not.

Read-only is the default

Battery data, ECU identification, fault codes and live telemetry are all read operations. Running them cannot change vehicle configuration. This is the large majority of what Hanterill does.

Operations that change the vehicle

Clearing diagnostic information, service routines and adaptations alter ECU state. In Hanterill these are grouped separately, labelled, and disabled until you explicitly enable write access for the session. They fail closed: if the opt-in is not present, the request is not sent.

High voltage

Electric vehicles carry hazardous high-voltage systems. Reading battery data over a diagnostic link does not de-energise anything and does not make physical high-voltage service safe. HV service requires procedures, equipment and training from the manufacturer.

Not a substitute for manufacturer tooling

Hanterill is an independent project. It does not replace the diagnostic system supplied by the manufacturer, and it is not affiliated with Volvo Cars, Polestar or Geely. Use it to understand your vehicle, not as the sole basis for a safety-critical repair decision.

Provisional platforms

On Experimental or Research platforms, decoding is not verified. Do not rely on battery figures or fault interpretation, and do not run service routines.