UI family
UI_a181_ModemFirmwareVersionMismatch
Not Available
What does the UI_a181_ModemFirmwareVersionMismatch alert mean?
Modem reported firmware version does not match the vehicle firmware version.
What you'll see in your Tesla
- Not Available
What triggers it
On Telematics Control Unit (TCU) platform, reported signature does not match the stored deploy signature; On Iris platform, reported version doesn't match the stored deploy version.
When it clears
Modem firmware needs to be updated.
Potential impact
Potential loss of Cellular connectivity; On Telematics Control Unit (TCU), there may be also loss of Wifi and/or Bluetooth functionalities.
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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