VCREAR family
VCREAR_a179_epbProblem
Parking brake functions degraded
What does the VCREAR_a179_epbProblem alert mean?
Customer facing alert for Electronic Parking Brake issues which occur when caliper is not moving
What you'll see in your Tesla
- Parking brake functions degraded
- Parking brake may not apply or release
What triggers it
Electronic Parking Brake has idle fault, or CSM_RQST_INVALID/CSM_RQST_NONE during retry or fault
When it clears
Electronic Parking Brake attempts a new operation
Potential impact
Electronic Parking Brake caliper motor may be disconnected (idle fault), or no csm requests during retry/fault
Affected models
Cybertruck
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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.