VCSEC family
VCSEC_a453_passiveDisabled
Phone key disabled on the mobile app
What does the VCSEC_a453_passiveDisabled alert mean?
Drive has been attempted with no auth while a phone has reported passive authentication is disabled
What you'll see in your Tesla
- Phone key disabled on the mobile app
- Enable phone key or use remote start
What triggers it
Drive has been attempted with no auth while a phone has reported passive authentication is disabled
When it clears
Drive is enabled
Potential impact
User cannot drive car becuase they have disabled passive auth on their phone-key
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Track your Tesla's alerts automatically
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.