MyTeslaMate
HVREX family

HVREX_a157_FcPosCtrOpenFailCurrentStillHigh

Not Available

What does the HVREX_a157_FcPosCtrOpenFailCurrentStillHigh alert mean?

Positive contactor is expected to be open but HV current is still present. Possible weld detected.

What you'll see in your Tesla

  • Not Available

What triggers it

Contactor state timed out of OPENING (and transitioned to AUX_MISMATCH) due to HV current not being low enough to open contactors.

When it clears

Contactor state is OPEN or PULLED_IN.

Potential impact

The pyro fuse may be deployed.

Affected models

Cybertruck

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Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.