EPBR family
EPBR_a127_MotorNVoltHigh
Not Available
What does the EPBR_a127_MotorNVoltHigh alert mean?
Motor negative lead voltage is greater than 6.0 volts while inactive
What you'll see in your Tesla
- Not Available
What triggers it
The Electronic Parking Brake motor is idle, and the negative lead voltage measurement is higher than 6.0 volts.
When it clears
Caliper state machine exits csmState CSM_FAULT
Potential impact
Caliper motor or harness may be damaged
Affected models
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.