Urgh. MCU Bite The Dust

[smilepak]

Ah, I have joined the fan club of dead mcu. 2015 MS w/95k miles. It was lagging so I pressed the middle two buttons to reboot it and it won't boot back up. Stepped on the brakes and press for over a minute several times, no dice. Rebooted dash console, that rebooted. Since MCU is dead, a/c won't turn off, even after leaving the car. So drove it to the service center to find out they don't give loaners anymore for vehicle out of warranty!!!! They only do it for vehicle under warranty. Come on Tesla. BMW, Lexus, and others a like still give a loaner. Heck my 2006 Lexus still get a loaner when I bring it in for a service.

Anyhow, I digress. They will do a diagnostic to see if a new MCU is needed. If so, I requested to upgrade for the newest available unit. They are backlog so could be over 3 weeks wait!!!! Argh!

 

[SO16]

Ah, I have joined the fan club of dead mcu. 2015 MS w/95k miles. It was lagging so I pressed the middle two buttons to reboot it and it won't boot back up. Stepped on the brakes and press for over a minute several times, no dice. Rebooted dash console, that rebooted. Since MCU is dead, a/c won't turn off, even after leaving the car. So drove it to the service center to find out they don't give loaners anymore for vehicle out of warranty!!!! They only do it for vehicle under warranty. Come on Tesla. BMW, Lexus, and others a like still give a loaner. Heck my 2006 Lexus still get a loaner when I bring it in for a service.

Anyhow, I digress. They will do a diagnostic to see if a new MCU is needed. If so, I requested to upgrade for the newest available unit. They are backlog so could be over 3 weeks wait!!!! Argh!

Or you can contact EV-FixMe on here to just do the EMMC replacement.

 

[croman]

Or you can contact EV-FixMe on here to just do the EMMC replacement.

Not possible if it's dead.

 

[IndyToronto]

Not possible if it's dead.

Supposedly, one possible cause for black screen MCU that can't boot is if the eMMC (flash memory) has too many bad cells that it can't even read the boot code. This would mean in theory a new eMMC could work. Unfortunately, if your eMMC is completely unreadable, it can't be copied over... so look in the forum for the guys who do fix out of warranty MCU. Or you could buy a new one from Tesla for a bit more.

 

[aaron0k]

Not possible if it's dead.

There are a few tricks, it will likely require pulling out the MCU.

@smilepak you're not too far from EV-Fixme, message him.

 

[smilepak]

Supposedly, one possible cause for black screen MCU that can't boot is if the eMMC (flash memory) has too many bad cells that it can't even read the boot code. This would mean in theory a new eMMC could work. Unfortunately, if your eMMC is completely unreadable, it can't be copied over... so look in the forum for the guys who do fix out of warranty MCU. Or you could buy a new one from Tesla for a bit more.

I might as well take the opportunity to upgrade since the LTE signal suck on it as well and no Netflix.

What's disappointing is the fact no more loaner and they only doing it for vehicles under warranty.

 

[aaron0k]

What's disappointing is the fact no more loaner and they only doing it for vehicles under warranty.

psssst... Just print this off their website next time you visit the Service Center. They'll give you a Roadster... tell'em Elon said so.

Creating the World’s Best Service and Warranty Program
Elon Musk, Chairman, Product Architect & CEO

"The best way to experience service is, of course, not to experience service. If your car does need service, then it should be swapped with a car that is ideally better in some or many ways...

For an added bit of fun, customers in most markets will have the choice of taking home one of our Tesla Roadster sports cars when their car is in for service. Few experiences are more sublime than driving a beautiful electric sports car on a road along the ocean or through a forest with the top down on a summer day and hearing only the sounds of nature."​

 

[Rockwell]

Supposedly, one possible cause for black screen MCU that can't boot is if the eMMC (flash memory) has too many bad cells that it can't even read the boot code. This would mean in theory a new eMMC could work. Unfortunately, if your eMMC is completely unreadable, it can't be copied over... so look in the forum for the guys who do fix out of warranty MCU. Or you could buy a new one from Tesla for a bit more.

Yes, that is correct. EVFIXME still have the ability to recover the necessary data when the MCU goes dead. If evfixme cant recover the data on your eMMC they do not charge you anything but the return shipping.

 

[mtndrew1]

Please report to safercar.gov so that the NHTSA can add your failure to the list of dead MCU1s. This will help to determine whether or not the problem results in a safety concern.

 

[smilepak]

Got the email they ordered the parts. Now it is a waiting game on when this will happen I guess.

MCU INTEL UPGRADE-For TegraAP1.0 - NORTH AMERICA
Part #: 9874564-00-B

 

[EV-Fixme]

Not possible if it's dead.

We have brought many back from "dead" usually "dead" just means the MCU is not booting. Most owners and Service cant troubleshoot the issue down to the chip. The frequency of actual "Dead" emmc's are pretty rare, however we did have one die this week as we were reading, thankfully we already got all the data we wanted.

 

[EV-Fixme]

Got the email they ordered the parts. Now it is a waiting game on when this will happen I guess.

MCU INTEL UPGRADE-For TegraAP1.0 - NORTH AMERICA
Part #: 9874564-00-B

We can likely fix it before that even arrives

 

[smilepak]

There are a few tricks, it will likely require pulling out the MCU.

@smilepak you're not too far from EV-Fixme, message him.

Thanks. I might as well use this opportunity to upgrade to the new MCU.

 

[smilepak]

We can likely fix it before that even arrives

It does look that way. It seems I am able to connect to the vehicle via the app now.

 

[EV-Fixme]

It does look that way. It seems I am able to connect to the vehicle via the app now.

I would recommend 3rd party or mcu2.

 

[hybridbear]

Yikes! That's a long wait time! You'd think they've give priority to an underivable car like yours to get it back to you more quickly.

 

[smilepak]

Yikes! That's a long wait time! You'd think they've give priority to an underivable car like yours to get it back to you more quickly.

According to the SC they are trying to recover the existing mcu but have the upgrade on order. No eta.

 

[smilepak]

Ok, Received my MS back. According to them they were able to recover the unit. They did a 12V cycle, wipe the eMMC and reflash it with the latest firmware 2020.17. So no need to have it replace. Charged 200 bucks for the service.

However, when they open it to flash it, they unplugged my amp and never plugged back in. So I have no power to my sub . Have to take it back to them to look at it again. Sloppy job.

 

[SoCal Buzz]

Ok, Received my MS back. According to them they were able to recover the unit. They did a 12V cycle, wipe the eMMC and reflash it with the latest firmware 2020.17. So no need to have it replace. Charged 200 bucks for the service.

However, when they open it to flash it, they unplugged my amp and never plugged back in. So I have no power to my sub . Have to take it back to them to look at it again. Sloppy job.

Even after wiping, isn’t it likely to fail outright given too many write cycles? So best to replace or upgrade while you can?

 

[smilepak]

Even after wiping, isn’t it likely to fail outright given too many write cycles? So best to replace or upgrade while you can?

That is what I think. But given the delay getting it I guess getting the vehicle back to use in the meantime is better than nothing.

but whatever they did I now lost power to my amp. They forgot their tools in my car. Left lights unplugged. Sloppy.