UI family
UI_a029_ModemMIA
Not Available
What does the UI_a029_ModemMIA alert mean?
One or more of the messages the User Interface (UI) Electronic Control Unit (ECU) receives periodically from the cellular modem is not received, indicating the cellular modem may be unavailable (MIA).
What you'll see in your Tesla
- Not Available
What triggers it
One or more of the expected messages from the cellular modem is not received.
When it clears
The UI ECU starts receiving the expected messages from the cellular modem.
Potential impact
The vehicle may intermittently or persistently loose cellular connectivity.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Semitruck
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