EPAS3P family
EPAS3P_a056_battUv
Not Available
What does the EPAS3P_a056_battUv alert mean?
Assist disabled due to supply undervoltage
What you'll see in your Tesla
- Not Available
What triggers it
Battery < 9V
When it clears
Expected voltage observed (10V ~ 18V)
Potential impact
Reduced assist and EAC inhibited
Affected models
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.