DI family
DI_a174_notOkToStartDrive
Unable to drive
What does the DI_a174_notOkToStartDrive alert mean?
The drive interface (DI) electronic control unit (ECU) detects that the low voltage (LV) supply is too low to shift into Drive.
What you'll see in your Tesla
- Unable to drive
- Voltage supply too low
What triggers it
The DI ECU detects that the LV supply is below the alert threshold.
When it clears
The DI ECU detects that the LV supply is above the alert threshold.
Potential impact
The vehicle cannot enter Drive.
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.