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MCU2 rebooting often

Les236

Member
Jan 20, 2018
263
136
Kissimmee, FL, Boston, MA
I had my MCU upgraded in November to MCU2 on my MX100D. Other than slowness, we really never had too many issues with MCU1, although I would have to reboot it manually sometimes for TuneIn to work, or if I wanted to use the Web browser.

Since the MCU2 install we have had it reboot on us many times on its own. One time while driving on the highway and trying to use ABETTERROUTEPLANNER on the web browser. Since both screens are tied to it, both went blank. Luckily the MCU2 doesn't take long to reboot, although losing your screens while at highway speed can be unnerving. We were using AutoPilot at the time, and the car maintained speed and steering. I guess this is because that is run by the AP3 computer. It has rebooted or frozen completely while on the highway several times and when it froze, speed indicator didn't change, Navigation screen wasn't updating so I have to do a restart while driving.

Other times it has rebooted often after a SC stop, when we have been watching Netflix. We'll X out of the Netflix, go back to unplug, and when we reenter the car we see the Tesla logo on the big screen and the dash screen is blank. This has happened on many different software versions. We have had 4 software updates and are currently on 2020.48.26. Have others experienced these reboots?
 

boaterva

Supporting Member
Supporting Member
Apr 2, 2016
7,575
3,817
Northern Virginia, USA
Never seen this on mine. Only idea would be to do a complete power off from the menu (wait five minutes before touching a door handle or anything else) but it probably won’t help. Guess is the new MCU has bad memory but that’s a WAG. If that doesn’t work, yeah, make an appointment.
 

Les236

Member
Jan 20, 2018
263
136
Kissimmee, FL, Boston, MA
firmware? MCU1 or 2? I was having this problem since I upgraded to MCU2 and it was a known issue with Tesla through many software updates. I don't know when the last time was, but it has been months. I am currently on 2021.32.22
 

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