UI family
UI_a233_ModemRFFailure
Not Available
What does the UI_a233_ModemRFFailure alert mean?
The cellular baseband Radio Frequency (RF) module did not initialize.
What you'll see in your Tesla
- Not Available
What triggers it
The cellular baseband RF module reported a condition affecting its operation while in online mode.
When it clears
The cellular baseband successfully initializes the RF module and attaches to a cellular network.
Potential impact
Vehicle loses cellular connectivity. This affects features reliant on network communication.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
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.