UI-A077
UI_a077_AudioA2bMicChannelSwap
Also written as UI_A077 / UI A077 / UI_a077_AudioA2bMicChannelSwap / ui_a077_audioa2bmicchannelswap
Why does the exact Tesla alert ID matter?
Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.
What does UI-A077 mean?
Tesla alert code in the User Interface (UI) module. The A2B microphone channels are in a swapped state The device is in the swapped channel state if any of the first three channels are zero and any of the other channels are non zero Microphone channels unswapped and correctly aligned Microphone may be inoperative. Its audio stream will be restarted Modem has stopped communicating. The modem has stopped communicating Ecall microphone is disconnected ICE/BMP fails to detect or initialize the microphone and/or associated components ICE/BMP detects and initializes the microphone and associated components Audiod IO thread blocked, audiod restarted ALSA IO function took longer than 10s (should be under 4ms), so audiod was restarted Audiod was restarted, could result in audio artifact The connection manager detected a problem with Wi-Fi and requested a reset Wi-Fi connectivity may be unavailable Successive modem power ON failures The USB hub is not enumerating The USB hub is not enumerating, it may be broken or disconnected. USB hub may be broken or disconnected
Original Description
The A2B microphone channels are in a swapped state The device is in the swapped channel state if any of the first three channels are zero and any of the other channels are non zero Microphone channels unswapped and correctly aligned Microphone may be inoperative. Its audio stream will be restarted Modem has stopped communicating. The modem has stopped communicating Ecall microphone is disconnected ICE/BMP fails to detect or initialize the microphone and/or associated components ICE/BMP detects and initializes the microphone and associated components Audiod IO thread blocked, audiod restarted ALSA IO function took longer than 10s (should be under 4ms), so audiod was restarted Audiod was restarted, could result in audio artifact The connection manager detected a problem with Wi-Fi and requested a reset Wi-Fi connectivity may be unavailable Successive modem power ON failures The USB hub is not enumerating The USB hub is not enumerating, it may be broken or disconnected. USB hub may be broken or disconnected
Affected Tesla Models
What You May Notice
- User Interface alert: The A2B microphone channels are in a swapped state The device is in the swapped channel state if any of the first three
- Touchscreen may show an error for one or more apps or settings
- Feature may restore itself after a reboot
How to Diagnose and Resolve
- 1 Perform a soft reboot (hold both scroll wheels for ~10 seconds)
- 2 Check for pending OTA software updates
- 3 If the issue persists, schedule a service appointment
Severity Notes
UI-A077 is an Alert in the User Interface system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.