MCU family
MCU_w027_dtcActive
Service is required
What does the MCU_w027_dtcActive alert mean?
generic DTC user alert active
What you'll see in your Tesla
- Service is required
- Schedule service
Affected models
Model S 2012-2020
Model X 2015-2020
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.