UI family
UI_a019_ParkBrakeFault
Parking brake functions degraded
What does the UI_a019_ParkBrakeFault alert mean?
Park brake (EPB) detected a fault such as disconnected harness or electrical short, etc. whilst not applied or is not available. Triggers amber tell tale light on the cluster
What you'll see in your Tesla
- Parking brake functions degraded
- Parking brake may not apply or release
What triggers it
Park Brake (EPB) detected a fault such as disconnected harness or electrical short, etc. or is not available
When it clears
EPB resumes standard operation
Potential impact
EPB may not be operational
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
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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.