HVBATT family
HVBATT_a074_Bp1BrickUnderVoltageFault
High voltage battery requires service
What does the HVBATT_a074_Bp1BrickUnderVoltageFault alert mean?
A battery pack 1 brick voltage is below the under voltage fault limit
What you'll see in your Tesla
- High voltage battery requires service
- Vehicle may not restart
What triggers it
A battery pack 1 brick voltage is below the under voltage fault limit for X duration (in seconds)
When it clears
All battery pack 1 brick voltages are above the under voltage fault limit
Potential impact
Inability to enter drive or support the low voltage (LV) system
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.