RCU family
RCU_a014_asicTempHigh
Backup power braking assist unavailable
What does the RCU_a014_asicTempHigh alert mean?
The Redundant Control Unit (RCU) Application Specific Integrated Circuit (ASIC) is too hot.
What you'll see in your Tesla
- Backup power braking assist unavailable
- OK to drive - Schedule service
What triggers it
The RCU ASIC temperature exceeds 175 degrees Celsius.
When it clears
The RCU ASIC temperature returns below 165 degrees Celsius.
Potential impact
The RCU may not be able to perform backup power braking assist.
Affected models
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.