UI family
UI_a085_DeserializerError
Not Available
What does the UI_a085_DeserializerError alert mean?
The car computer is unable to recieve the deserialization chip ID over the I2C bus, which may lead to the touchscreen being blank, unresponsive, or have limited functionality.
What you'll see in your Tesla
- Not Available
What triggers it
The car computer is unable to recieve the deserialization chip ID over the I2C bus.
When it clears
The car computer is able to recieve the deserialization chip ID over the I2C bus.
Potential impact
The touchscreen may be blank, unresponsive, or have limited functionality.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Semitruck
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.