Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register

Update froze the MCU for days, no fix in sight.

paulk

Member
Jan 26, 2019
90
108
hartford, ct
Three days ago, 11/6, i started the install of 2019.32.12.7 on my late 2017 MCU1/AP2.5 model S which had 2019.32.12.3. The next morning, i saw that the screen was black aside from a message in the middle saying "Software updating to 2019.32.12.7, updating autopilot" and the progress showed about 20% done. it has been like that for so far three days, and i can't get out of that screen. i cant access climate control (its 23 degrees outside), cant use navigation, cant control the radio aside from steering wheel controls. ive tried resetting the MCU both with the brake pedal down and without.

of course tesla support has done nothing to help. i sent around five messages to tesla without a response and the next service appointment is weeks away.

any ideas on a fix?
 

random155

Member
Mar 18, 2019
876
449
NJ
That really sucks, sorry to hear. Most likely your MCU will need to be replaced. Do you have rangers in your area that could come out sooner?
 

Az_Rael

Supporting Member
Jan 26, 2016
5,614
8,783
Palmdale, CA
Three days ago, 11/6, i started the install of 2019.32.12.7 on my late 2017 MCU1/AP2.5 model S which had 2019.32.12.3. The next morning, i saw that the screen was black aside from a message in the middle saying "Software updating to 2019.32.12.7, updating autopilot" and the progress showed about 20% done. it has been like that for so far three days, and i can't get out of that screen. i cant access climate control (its 23 degrees outside), cant use navigation, cant control the radio aside from steering wheel controls. ive tried resetting the MCU both with the brake pedal down and without.

of course tesla support has done nothing to help. i sent around five messages to tesla without a response and the next service appointment is weeks away.

any ideas on a fix?


For issues that affect safety or driveability (no HVAC defrost probably counts) you can usually drive the car directly to the SC and they will take it.
 
  • Like
Reactions: Akikiki

boaterva

Supporting Member
Apr 2, 2016
7,564
3,736
Northern Virginia, USA
What do you mean support was no help? Did you call them? How do you send messages to them? In an emergency I’d never do anything except call.

I had an issue like this with a bad release once and it was fixed over the course of a day where the car was reset remotely and we got it rebooted and restarted. I had to use the app to wake it up.

But a phone call is the best way to reach them when needed.
 
  • Like
Reactions: Akikiki

TSLC

Member
Oct 1, 2017
56
59
Utah
I am hoping an MCU2 upgrade pathway presents itself soon, to allow improved functionality and not get the same challenged hardware over again. This type of stuff makes me nervous about downloading and installing updates.
 
  • Like
Reactions: Akikiki

NavinRJohnson

New Member
Apr 13, 2018
3
0
Minnesota
Same issue. It just finally completed the update after 3 days.

I had to drive the car for about 60 miles with that updating screen. I used the Tesla app to control the climate and change the music source under the media section.
 

George Jetson

Member
Feb 23, 2013
303
208
The Future
My software update is also stuck for 4 days running now. Car is driveable with basic driver's display, but no touchscreen, nav, HVAC, music, etc. Service appointments in Houston are now 15-20 days waiting time. If so many people are having the update issue, why aren't they pushing out a bug fix?
 

George Jetson

Member
Feb 23, 2013
303
208
The Future
Same issue. It just finally completed the update after 3 days.

I had to drive the car for about 60 miles with that updating screen. I used the Tesla app to control the climate and change the music source under the media section.
Hopefully my problem will also resolve itself like this before my service appointment in 2 weeks. I can't access the car through the app at all and it won't charge. It behaves exactly like it does during a software update with the exception that I can still drive it in "safe mode". I get the warning about "wait for systems to power up" on the dash, but it still powers on after waiting a few minutes.
 

George Jetson

Member
Feb 23, 2013
303
208
The Future
Three days ago, 11/6, i started the install of 2019.32.12.7 on my late 2017 MCU1/AP2.5 model S which had 2019.32.12.3. The next morning, i saw that the screen was black aside from a message in the middle saying "Software updating to 2019.32.12.7, updating autopilot" and the progress showed about 20% done...
Are you still having this problem?
 

George Jetson

Member
Feb 23, 2013
303
208
The Future
The tech crew texted me yesterday and we ran through a few things so they can hopefully diagnose the problem remotely. No word yet on that outcome and my MCU is still dead as a doornail.
 

George Jetson

Member
Feb 23, 2013
303
208
The Future
The latest update killed my MCU. I just got the car back today from the SC, thank god I'm still covered by the warranty. I asked if they could install an MCUv2 instead of putting the v1 back in, but no go. If its a warranty repair, the same part number (if current) needs to go back in. I'm going through the hassle of repersonalizing everything from factory reset that I've done over the course of the last 3 years. One thing stood out to me, Sentry Mode is now greyed out, whereas I was using it before. All of my auto suspension raising locations are also wiped, as I anticipated. The SC also reset my software to the previous version before the update killed it. 2019.32.12.7. It will be interesting to discover what else is different now from the steady state I had before.
 

George Jetson

Member
Feb 23, 2013
303
208
The Future
So was it the emmc that died? Or something else- do you know? If I recall correctly from others anecdotes the screen goes dead when it is the emmc.

What happened with the op? @paulk ?
The SC would only say “the computer needs to be replaced”. I’m assuming they meant the eMMC crapped out, but they wouldn’t elaborate. Interestingly when I looked at the part they replaced, it had a “REMAN” suffix on it. I interpreted this as a refurbished MCUv1 with a new chip installed. YMMV.
 

About Us

Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.

Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


SUPPORT TMC
Top