Hacker News new | ask | show | jobs
by vincnetas 21 days ago
You can use OBD2 dongle to change default setting of lane assist to be off by default (after car starts) And many more setting that are decided for you as if you were using a rental car not your own. Like always reseting air conditioner to 22C after starting a car. God dammit i want 20C. Let it stay like that when i start a car.
2 comments
casperc 20 days ago
For VW cars, that has been severely limited as well from 2024 with SFD2, which requires a token from VW. Quite sad really.
link
psd1 20 days ago
> You can use OBD2 dongle to change default setting of lane assist

Colour me skeptical. ODBII is just a protocol; it knows nothing of the modules on your buses. I think you will find you need the dealer software. Tools exist that implement big chunks of that functionality, but since they are built on reverse-engineering, the price approaches the dealer software anyway.

The only place i found the Mercedes software was a paid forum that obscures the links. Getting the cracks working was a magic incantation. It's similar for VAG. They won't sell you the software if you're not a dealer.

You will not get there with a £40 ebay special. If you can, please share what works, it will be of much interest to many.

link
glitchcrab 20 days ago
You're correct that the dongle only facilitates the connection, but you don't need dealer software. I have an ODB dongle and a £20 (I think) app on my phone which lets me change a _ton_ of settings on my BMW which aren't available in any in-car menus.
link
psd1 20 days ago
What app?
link
glitchcrab 20 days ago
Bimmercode lets you do coding (it's very powerful and you can easily mess up your car so you have to be very careful with it), and Bimmerlink lets you read fault codes etc.
link
psd1 20 days ago
Does it label the fields, or are you following forum instructions to write 0x01 to module 76 channel 004?
link
glitchcrab 20 days ago
Safer settings are exposed with decent labels, but you can also use the advanced mode which is much more low-level, akin to what you described.
link
vincnetas 20 days ago
not affiliated. have used ODB eleven on my vw eup (2021). They have curious payment strategy. Basically you buy tokens and then use them for each enable/disable operation.

https://obdeleven.com

link