VCSEC family
VCSEC_a302_unfused
Not Available
What does the VCSEC_a302_unfused alert mean?
Security Vehicle Controller (VCSEC) is using the factory key (unfused) rather than a production key (fused).
What you'll see in your Tesla
- Not Available
What triggers it
This alert is set on first boot when the VCSEC is unfused.
When it clears
The VCSEC is detected as production-fused. Fusing can be completed via the PROC_VCSEC_X_SWITCH_ROOT_KEY routine.
Potential impact
ODIN key pairing or remote commands may not work until the VCSEC is fused.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Semitruck
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