VCTRAILER family
VCTRAILER_a209_auxConverterTripped
Trailer auxiliary power may be unavailable
What does the VCTRAILER_a209_auxConverterTripped alert mean?
The trailer controller (VCTRAILER) detected that the trailer aux converter was turned off due to a tripped fuse
What you'll see in your Tesla
- Trailer auxiliary power may be unavailable
- Exiting and re-entering vehicle may restore functionality
What triggers it
Aux converter output detected off
When it clears
End of drive cycle
Potential impact
Trailer brakes may be inoperative
Affected models
Cybertruck
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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.