DIF family
DIF_a077_lvSupplyUV
Not Available
What does the DIF_a077_lvSupplyUV alert mean?
The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery power supply undervoltage event.
What you'll see in your Tesla
- Not Available
What triggers it
LV supply voltage to DI (refer to lvSupply) is disconnected or drops below lower voltage threshold
When it clears
LV supply rises back above lower threshold
Potential impact
Drive unit enters unit limp mode (see DI_a126_limpMode)
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Track your Tesla's alerts automatically
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.