STO family
STO_a004_pwrSupOverVolt
Not Available
What does the STO_a004_pwrSupOverVolt alert mean?
Steering Torque Overlay (STO) assist halted due to high Power Supply voltage.
What you'll see in your Tesla
- Not Available
What triggers it
Internal: Voltage between Fail Safe Relay 1 and 2 >= 18.5 Volts for 1 second
When it clears
Voltage is under 18.5 volts
Potential impact
Steering Assist reduced
Affected models
Semitruck
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