Visible arcing or sparking when connecting or disconnecting the vehicle, sometimes accompanied by a popping sound.

Safety first: Stop using the charger immediately. Turn off power at the breaker before any inspection.

• Inspect connector and inlet: Check for pitting, burn marks, or melted plastic on the Polestar connector pins. Replace the cable assembly if damage is present.
• Verify proper operation: Ensure that the charger only energizes after the connector is fully inserted and de‑energizes before removal. If not, the contactor or control logic may be faulty.
• Check contactor: Inside the charger, inspect the main contactor for signs of overheating or welding. Replace if suspect.
• Professional service: Because arcing can damage both charger and vehicle, have a qualified technician perform a full safety inspection before returning the charger to service.