DI family
DI_a146_pbrkPanicEpbFault
Parking brake not applied
What does the DI_a146_pbrkPanicEpbFault alert mean?
The drive interface (DI) electronic control unit (ECU) detects that there is an issue with the electronic parking brake (EPB) during parking.
What you'll see in your Tesla
- Parking brake not applied
- Vehicle may free roll
What triggers it
The DI ECU detects a condition affecting the EPB.
When it clears
The DI ECU detects that the condition clears.
Potential impact
The EPB is not applied.
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.