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Running Tesla Model 3's computer on my desk using parts from crashed cars

bugs.xdavidhu.me

191–200 of 356 posts

Re: Running Tesla Model 3's computer on my desk using parts from crashed cars

#191

I would love to use the drive units from a Tesla in a conversion project. Unfortunately, they're cryptographically paired with the main computer, and there's no way to use them. What a waste.

The trick is to pick up the main computer and the paired drive unit(s) by picking up a whole vehicle (with a salvage title). There are shops in LA, and elsewhere who do conversions this way.

Re: Running Tesla Model 3's computer on my desk using parts from crashed cars

#192

Earlier quoted context omitted.

Perhaps it is also about liability. Otherwise, we would have people installing OpenClaw on their Teslas.

Then why wasn't it a problem before? People have always been able to install aftermarket or possibly even hacked together physical parts. If there was liability you'd expect some sort of shield blocking access to, for example, the hydraulic system for the brakes. As it turns out though blatant irresponsibility is quite rare (depending on your definition anyway) since people have a strong self interest in not endanger…

> Then why wasn't it a problem before?

It is. Thousands of people have died because of aftermarket headlights. Harder to assess, but probably much larger, is the number of excess deaths from nitrous oxide etc. emitted by modified cars.

Re: Running Tesla Model 3's computer on my desk using parts from crashed cars

#193
post #83

Earlier quoted context omitted.

Interesting take–– I feel the total opposite; I love the UI.

i think a lot of people do. i don't know what it is, there's maybe just something about the car graphic that doesn't sit right with me. the front/side view when parked just seems cheesy for some reason. maybe because it's meant to show unclosed doors or something and when everything is set the car's status is car which is redundant.

Animations could probably be faster and touch areas for opening trunk/frunk could be larger.

But then I'm driving brand new Fiat RV with CarPlay this week. Cruise control by itself has 2 or 3 bugs, and that's not even trying to be picky. Or how's this - can't hotspot from me while phone is in carplay. Can't pinch-zoom or pan maps in 2026 and myriad other things that makes me cringe when people moan they don't buy Tesla because lack of carplay.

Re: Running Tesla Model 3's computer on my desk using parts from crashed cars

#194

Earlier quoted context omitted.

[flagged]

> "Tesla is the same pattern applied to consumer vehicles" It really isn't. Unlike John Deere, Tesla is actually pretty good on right-to-repair. All of their technical and repair manuals are available for free to anyone. The service/diagnostics software ("Toolbox") is also available to anyone, albeit for a (not entirely unreasonable) fee. (There is also a service mode built in to the car which can do many basic diagn…

> All of their technical and repair manuals are available for free to anyone.

That should be the bare minimum. Ford charges you 40 dollar an hour for it and unless you know exactly what you are looking for you will spend several hundreds on it.

Too bad ford killed their old site, the print form was unauthenticated and you could print the entire schematics to pdf if you knew the internal model number. Or do what I did and run a script to dump it to higher res PNGs.

Re: Running Tesla Model 3's computer on my desk using parts from crashed cars

#195
post #99

From the article > Tesla offers a “Root access program” on their bug bounty program. Researchers who find at least one valid “rooting” vulnerability will receive a permanent SSH certificate for their own car, allowing them to log in as root and continue their research further. Pretty interesting. Sounds like Apple's Security Research Device Program[0], where you're loaned a rooted iPhone, but with a clear qualificati…

The interesting part is this implies that Tesla cars have static certifcates that don't rotate. (Whoops.)

Not necessarily. All they have to do is roll a pub key into the update package. Same as any OTA update.

Re: Running Tesla Model 3's computer on my desk using parts from crashed cars

#196
post #179

Earlier quoted context omitted.

> Researchers who find at least one valid “rooting” vulnerability will receive a permanent SSH certificate for their own car It feels like this is something you should get by being owner of the car, and not have to do free speculative research for the manufacturer to get it.

Normies get scammed on Discord into pasting commands into their browser console. As a pedestrian I prefer for most people to not have root access to their multi-ton fast-moving killing machine.

Agrred, but it is remote root access is the danger, they already have root access to the physical dangerous things.

Re: Running Tesla Model 3's computer on my desk using parts from crashed cars

#197

> " I needed this because both the computer and a screen were being sold with the cables cut a few centimeters after the connector (interestingly most sellers did that, instead of just unplugging the cables)." Can't you just solder some extra wires onto the cut off bits, rather than having to try and find a compatible cable? They've left the connectors in, and that's the hard bit, the rest is just wires

From messing around with these units from various cars, which often need more enablement than these, sometimes it’s nice to just know your interpretation of the wiring diagrams isn’t at fault when chasing down “no lights at all” issues.

Re: Running Tesla Model 3's computer on my desk using parts from crashed cars

#199
post #27

I used to work for a company that made third party scan tools. We had racks of ecus disconnected from the car with just a diagnostic connector and power. nothing got to a real car without first trying it on the rack. I remember on time we figured out a bmw (pre obdii) had the bytes offset from the standard documentation (it was a semi-standard protocol that some other cars used at the time), we went from we communica…

That's super cool, I'm currently struggling with scan tools for a 1999 Mercedes E300 Turbodiesel. I had one that worked OK for about a decade (Autel something or other) with a 38pin connector, but it recently bricked itself with a message like "connect via USB to Updata" which I assume means its firmware somehow erased itself. Cannot figure out how to "updata" it, doesn't seem to connect via USB, the Autel software r…

Not sure about your specific car, but a lot of the “consumer friendly” options like OBDeleven, Carly, etc are fantastic. You often have to pay, but a lot of work goes into them and they often just work.

Re: Running Tesla Model 3's computer on my desk using parts from crashed cars

#200

I'm actually somewhat surprised the OS fully boots when it's not connected to the expected vehicle peripherals

Yeah, I expected some gigantic writeup about tricking it into thinking all other systems are connected to it but maybe it's made this way so it's easier to repair without needing the whole car
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