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Wiki Consolidated eMMC Thread (MCU repair) (Black Center Screen)

rxlawdude

Active Member
Jul 10, 2015
3,164
2,638
Orange County, CA
I applied for the refund after replacing my eMMC MCU with the upgraded version. It should be noted that when I went to the San Rafael service center to have the replacement repair done I was only offered a replacement of an MCU1 (same as the original that came with my 2014 Model S P85.) I choose to go with the upgraded MCU2 because why would I go with the original and have the same thing happen again? I spent $2,725.00 for the MCU2 upgrade/replacement. Anyway, after applying for the refund I received a check for $320.00 with an explanation as follows: "Teslas reimbursement process is only for the eMMC recall, not for the overall cost for the infotainment upgrade. The eMMC is a small component within the MCU, the recall/reimbursement is only for that one specific part. Upon review you were eligible for reimbursement of the cost of the 8GB eMMC repair available at the time of your upgrade." This came from Austin D / Tesla 8GB eMMc Recall Reimbursement Review. It should be noted that what he cites as 8GB eMMC repair available at the time of the upgrade was NEVER offered as an option by the San Rafael Service Center. I was given two options and two options only; Replace the eMMC with a type 1 or the upgraded type 2. Now I can see refunding only the Type 1 cost (quoted as being $1,200-ish) but giving me $320.00 is an insult and not, in my opinion, in the spirit of what the NTHSA and Tesla agreed to. Could someone please clarify WTF is going on? It should also be noted that I emailed Austin D back several times with no response. Great customer service!
I'd be peeved with that, too.
 

gaswalla

Model S,3,X.. CT with Austin delivery
Sep 23, 2012
3,496
4,074
San Diego
Is there a legal recourse? You seem to have a decent argument if someone actually listen to your case.

I received a $900 check. Which is what I paid Tony from EVfixit to replace the EMMC
 

mspohr

Well-Known Member
Jul 27, 2014
10,072
12,659
California
Is there a legal recourse? You seem to have a decent argument if someone actually listen to your case.

I received a $900 check. Which is what I paid Tony from EVfixit to replace the EMMC
Problem is that he upgraded to MCU2 and paid the standard price for that upgrade at that time.
Refund was for the EMMC part
 

whitex

Well-Known Member
Sep 30, 2015
6,755
8,578
Seattle area, WA
I applied for the refund after replacing my eMMC MCU with the upgraded version. It should be noted that when I went to the San Rafael service center to have the replacement repair done I was only offered a replacement of an MCU1 (same as the original that came with my 2014 Model S P85.) I choose to go with the upgraded MCU2 because why would I go with the original and have the same thing happen again? I spent $2,725.00 for the MCU2 upgrade/replacement. Anyway, after applying for the refund I received a check for $320.00 with an explanation as follows: "Teslas reimbursement process is only for the eMMC recall, not for the overall cost for the infotainment upgrade. The eMMC is a small component within the MCU, the recall/reimbursement is only for that one specific part. Upon review you were eligible for reimbursement of the cost of the 8GB eMMC repair available at the time of your upgrade." This came from Austin D / Tesla 8GB eMMc Recall Reimbursement Review. It should be noted that what he cites as 8GB eMMC repair available at the time of the upgrade was NEVER offered as an option by the San Rafael Service Center. I was given two options and two options only; Replace the eMMC with a type 1 or the upgraded type 2. Now I can see refunding only the Type 1 cost (quoted as being $1,200-ish) but giving me $320.00 is an insult and not, in my opinion, in the spirit of what the NTHSA and Tesla agreed to. Could someone please clarify WTF is going on? It should also be noted that I emailed Austin D back several times with no response. Great customer service!
At least you got something. Plenty of people who fixed their emmc's, myself included, were denied any compensation, even though at the time Tesla wanted over two grand to fix it. Welcome to Tesla.
 

FlatSix911

Porsche 918 Hybrid
Jun 15, 2015
6,946
6,897
Silicon Valley
I applied for the refund after replacing my eMMC MCU with the upgraded version. It should be noted that when I went to the San Rafael service center to have the replacement repair done I was only offered a replacement of an MCU1 (same as the original that came with my 2014 Model S P85.) I choose to go with the upgraded MCU2 because why would I go with the original and have the same thing happen again? I spent $2,725.00 for the MCU2 upgrade/replacement. Anyway, after applying for the refund I received a check for $320.00 with an explanation as follows: "Teslas reimbursement process is only for the eMMC recall, not for the overall cost for the infotainment upgrade. The eMMC is a small component within the MCU, the recall/reimbursement is only for that one specific part. Upon review you were eligible for reimbursement of the cost of the 8GB eMMC repair available at the time of your upgrade." This came from Austin D / Tesla 8GB eMMc Recall Reimbursement Review. It should be noted that what he cites as 8GB eMMC repair available at the time of the upgrade was NEVER offered as an option by the San Rafael Service Center. I was given two options and two options only; Replace the eMMC with a type 1 or the upgraded type 2. Now I can see refunding only the Type 1 cost (quoted as being $1,200-ish) but giving me $320.00 is an insult and not, in my opinion, in the spirit of what the NTHSA and Tesla agreed to. Could someone please clarify WTF is going on? It should also be noted that I emailed Austin D back several times with no response. Great customer service!
What was the cost breakout of the line item detail on your invoice... $2,725 sounds a bit high for the MCU2 upgrade.
 

EV-Fixme

Vendor
Supporting Member
Oct 24, 2019
618
702
Orange County, CA
Has anyone gotten a message on the instrument cluster saying, "Center Display unavailable. Driver and user settings could not be restored." This happened to me one morning when I started my car. The center screen took a while to boot up but it did after a few minutes and I was able to drive the car. The message remained for a day but then disappeared. I had my eMMC replaced a couple of months ago.

This does seem to happen some times. We've seen that mcu continues to work normally while showing the error. There may be some specific firmware that shows shows this error while MCU works fine. We have not had a chance to trace this down but it seems to be a incorrect warning message. Your case may be an issue as MCU was off?
 

Kaveman

Member
Oct 27, 2020
57
25
FL
"Has anyone gotten a message on the instrument cluster saying, "Center Display unavailable. Driver and user settings could not be restored." This happened to me one morning when I started my car. The center screen took a while to boot up but it did after a few minutes and I was able to drive the car. The message remained for a day but then disappeared. I had my eMMC replaced a couple of months ago."

This happened to me once post emmc repair. I did a few reboots, both screens ON, but communication between the two continued "Center Display Unavailable" message. "Power Off" had no effect either(my car doesn't seem to power all the way off? But that's something else). Ended up pulling the fuses for the MCU1 and the IC, waited a bit and reinsert fuses. Been fine since... All the previous setting were still there.
Kaveman
 
  • Informative
Reactions: vdiv

vdiv

Chief Grump
Jan 20, 2015
673
839
Reston, VA
I have gotten that message several times now with the eMMC/CPU daughter board replaced last year with a 64MB one by Tesla. The MCU comes back after a reboot but the message stays. Interestingly it disappears by itself overnight. Sometimes it is the IC that does not turn on for quite a while. That was also replaced in 2017 IIRC. I have the display energy savings to on and always connected disabled.
IMG_9947.jpg
 

KalJoMoS

Member
Aug 11, 2019
429
224
EETN, EST
That IC delay on waking up event has been there now quite a long, it was introduced almost a year ago... I have the same settings (display energy savings on and always connected disabled) but still running original eMMC. Not yet seen this “Center display unavailable”. Funny to see this message has typo, my spelling corrector can’t tolerate word “Center”
 
  • Helpful
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EV-Fixme

Vendor
Supporting Member
Oct 24, 2019
618
702
Orange County, CA
I have gotten that message several times now with the eMMC/CPU daughter board replaced last year with a 64MB one by Tesla. The MCU comes back after a reboot but the message stays. Interestingly it disappears by itself overnight. Sometimes it is the IC that does not turn on for quite a while. That was also replaced in 2017 IIRC. I have the display energy savings to on and always connected disabled.View attachment 688703
We have also seen this error, Does not matter what eMMC is in the car. Our guess is the error is do to some remaining corrupt data that was migrated, or will trigger when a response is not within the expected limitations.
 
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Froyoda

Member
Jan 22, 2021
10
5
United States
I wonder if they are partitioning the emmc and not extending the parts to take full advantage of the unallocated space? Man; seeing all the folks that are having issues after the daughter board work is not inspiring confidence in Tesla!
 

EV-Fixme

Vendor
Supporting Member
Oct 24, 2019
618
702
Orange County, CA
I wonder if they are partitioning the emmc and not extending the parts to take full advantage of the unallocated space? Man; seeing all the folks that are having issues after the daughter board work is not inspiring confidence in Tesla!
The chip self wear levels. The current chips are partitioned the same as original.
 
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mspohr

Well-Known Member
Jul 27, 2014
10,072
12,659
California
Thanks. That undersized memory chip certainly has cost Tesla a lot of time, energy, and resources. And it took them forever to finally drop the charge for the repair and refunding to those who had paid.
Another anecdote FWIW
Upgraded to MCU2 on my 2015 S. Never a problem with old or new memory.
 

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