VCLEFT family
VCLEFT_a404_swsForceI2cError
Steering wheel buttons unavailable
What does the VCLEFT_a404_swsForceI2cError alert mean?
Check for valid I2C force sensor communication
What you'll see in your Tesla
- Steering wheel buttons unavailable
- Service required to restore functionality
What triggers it
SWS detected invalid I2C force sensor communication
When it clears
Recoverable if I2C force sensor system returns to normal operation
Potential impact
Loss of functionality due to functional safety checks
Affected models
Model 3 2024+
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.