PCS2 family
PCS2_a108_FunctionalTestModeActivated
Not Available
What does the PCS2_a108_FunctionalTestModeActivated alert mean?
The Power Conversion System (PCS) has been placed into functional test mode
What you'll see in your Tesla
- Not Available
What triggers it
A request is issued to the PCS to place itself into functional test mode
When it clears
The PCS firmware must be rebooted
Potential impact
The PCS may become damaged if operated in an uncontrolled environment
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model Y
Model Y 2025+
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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.