STO family
STO_a020_predriverSpiComm
Not Available
What does the STO_a020_predriverSpiComm alert mean?
Steering Torque Overlay (STO) assist halted due to Primary pre-driver SPI communication startup error.
What you'll see in your Tesla
- Not Available
What triggers it
Primary Internal: pre-driver SPI communication three or more times on startup
When it clears
System Reset
Potential impact
Steering Assist reduced
Affected models
Semitruck
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