this post was submitted on 19 Sep 2023
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Even allowed now I would never ever modify my car firmware due to huge liability in case of any incident. Literally any insurance company figuring out you tempered with car software would try to take all the money paid for damages back from you.
You can inject CAN bus commands if you can sniff what they're sending. No firmware modification necessary. Not saying it's a good idea to do so, but it is possible to do so.