VCLEFT family
VCLEFT_a482_vnf1048FaultMCU
Car computer backup power unavailable
What does the VCLEFT_a482_vnf1048FaultMCU alert mean?
The VNF1048 chip, which powers the Media Control Unit (MCU), has encountered an unexpected condition. This may affect the power supply to the MCU.
What you'll see in your Tesla
- Car computer backup power unavailable
- Schedule service
What triggers it
The VNF1048 chip has reported an issue that is impacting its operation.
When it clears
This alert clears when the VNF1048 chip is functioning normally.
Potential impact
The affected electronic fuse (eFuse) may not be enabled, and the MCU may only have one remaining power source.
Affected models
Cybertruck
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.