New method. They’re backing up the keys on the boot partition of the emmc in a squashfs image.
Wiki Consolidated eMMC Thread (MCU repair) (Black Center Screen)
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New method. They’re backing up the keys on the boot partition of the emmc in a squashfs image.
rooter
Member
'Bout time they did this. My backups script has backed up critical files to the IC and home server for almost a year.
Haven't quite finished the part of the article yet on backing up to home server.
Interesting... this is an indication that they do not have your carkeys on their corporate servers. They're not making it easier for us, but for their own mechanics.
Haven't quite finished the part of the article yet on backing up to home server.
Interesting... this is an indication that they do not have your carkeys on their corporate servers. They're not making it easier for us, but for their own mechanics.
rooter
Member
The fob is in the user's hands, and its private key -must- match the carkeys' public key.
As Tesla are now backing up carkeys it indicates to me that before, a service center would have to go through a faff of remarrying the fob to the car. Now the backup facilitates MCU replacement when the chip is bad. Thus they must not have the public/private pair of each car on their corporate servers, which would have made retrieval easy.
appleguru or ce2078, correct me if I'm wrong.
(aack, I wish they'd correct the embarrassing grammar issues in the OP. Sometimes I despair for the public school system)
As Tesla are now backing up carkeys it indicates to me that before, a service center would have to go through a faff of remarrying the fob to the car. Now the backup facilitates MCU replacement when the chip is bad. Thus they must not have the public/private pair of each car on their corporate servers, which would have made retrieval easy.
appleguru or ce2078, correct me if I'm wrong.
(aack, I wish they'd correct the embarrassing grammar issues in the OP. Sometimes I despair for the public school system)
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Interesting. I was not considering the FOB and it's encryption. I have been assuming all the keys were related to communication to the mothership.
Thanks!
EV-Fixme
Vendor
I don't believe the cert has anything to do with the key fobs. I can check with a couple of my customers that successfully had Tesla generate a new cert for their Tegra repaired by us. Since the car's keyfobs work fine without cert or Tegra I don't think there is a relation. I could very well be totally wrong on this.
Maybe we are optimistically wrong,
whitex
Well-Known Member
I believe the carkeys being @appleguru is talking about are private key and certificate Tesla is using to authenticate the car, nothing to do with the actual car key fobs.
S85D
Member
@rooter, I tried to log onto https://unofficial-tesla-tech.com/ which is in your TMC signature and I cannot reach your webpage.
Krash
Data Technician
S85D
Member
What a shame, I wish I can copy/pasted all of the pages before they were removed. :-(
Newscutter
Member
For those that have had MCU failures, this may be of interest. There's at least *some* possibility that the cars could be recalled for free (or reimbursed) replacements of the original eMMC chips. If you've replaced an MCU, you might be well-advised to add your complaints to the NHTSA database as they're only reporting 11 (!) complaints.
https://www.cnbc.com/2020/06/24/us-opens-probe-into-tesla-model-s-after-touchscreen-failure-reports.html
https://www.cnbc.com/2020/06/24/us-opens-probe-into-tesla-model-s-after-touchscreen-failure-reports.html
EV-Fixme
Vendor
Some cars have reported loss of turn signals usage once MCU has failed also. One also looses the ability to turn on head lights. This can be an issue if your driving in an area where headlights are required even in daytime as the automatic headlights will not come on.
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It is a safety issue, so I would encourage everyone that has had problems to file a complaint. I think this is the correct place to do so: File a Vehicle Safety Complaint | Safercar.gov | NHTSA
Would help to include the investigation # so they can bucket it properly. NHTSA Action Number: PE20010
I added a complaint since I had the issue in 2018.
I just saw this article today.
U.S. probes touchscreen failures in Tesla Model S cars
It echoes what was noted above, but does not indicate a recall. Maybe if more complaints come in Tesla will act on it.
Thanks for this thread. As these cars get older and out of warranty I think we'll see more of these problems, but hopefully the community will have more of these bright minds to help each other out.
U.S. probes touchscreen failures in Tesla Model S cars
It echoes what was noted above, but does not indicate a recall. Maybe if more complaints come in Tesla will act on it.
Thanks for this thread. As these cars get older and out of warranty I think we'll see more of these problems, but hopefully the community will have more of these bright minds to help each other out.
That is because it is currently just a "preliminary evaluation" investigation. If I understand correctly if they find an issue during this they will then open an "engineering analysis" investigation. At which point they would decide if there should be a recall or not.
But NHTSA moves very slowly, so it will be like 1-2 years for them to go through their process. (Assuming Tesla doesn't do a voluntary recall first.)
I filed complaint to File a Vehicle Safety Complaint | Safercar.gov | NHTSA
whitex
Well-Known Member
You forgot about no HVAC and defrosters, no way to defog/defrost windshield or windows.
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