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MCU & Screen reboot while driving

This happened to us twice on our road trip this last week in our 2018 LR M3. The screen UI would slow down and freeze, then the A/C would kick on high and the screen would reboot. I put a service request in and they sent a firmware update (same version I already had) and said to unplug all the USB devices and install it. I installed it earlier and we'll see what happens. They also said the logs showed a data fault, that's why they resent the update.


Apr 10, 2021
This happened to me all the time while driving and noticed it happened while I was getting multiple text messages or group text messages. I disabled the text notification in the settings and have not had this problem ever since. I figured I would turn the setting back on after a new update is available hoping the issue is resolved.
I had it happen today was pulling into a parking lot and went to put the MY in reverse and nothing happened. So I pulled straight in and tried to press park. Didn't work either and then everything shut down. Three minutes later the screen slowly came back on and everything was back to normal. Weird.
This has happened to me twice in the last week since updating to 2021.44.30.5. It’s very disconcerting because the screen stayEd frozen for a few minutes, then went black for a minute, then showEd the logo and restarted. During those minutes I was without all safety systems (speedometer, blinkers, presumably wipers, etc.) and neither time was I in a place where I could safely pull over. I may hope the next software update removes this bug - I assume Tesla is able to monitor how often cars are forced to reboot with each software release…

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