Ask HN: Do custom ROMs exist for electric cars, for example Teslas?

Post by waffletower » Mon, Sep 01, 2025, 9:18 PM UTC

waffletower wrote: post #31

thrilleratplay wrote: post #14

I think I know what you are asking but it is complicated. For safety, regulator, historical and frankly common sense reasons, a car is not one system. It is a system of system that communicate via a CAN BUS, https://en.wikipedia.org/wiki/CAN_bus . This is still true for electric cars. Can this be hacked? Like everything else, yes. Can you side load a new ROM like an android device? Not that know of and hope that neve…

My Tesla used to crash fairly often, and thankfully only once this year. Usually in my driveway but there were two occasions that it crashed while in traffic waiting to make left turns. The touch screen interface component was the subject of all of these so called "crashes": the car is still drivable, but there is a large loss of feedback -- car signal tones are no longer present -- there isn't feedback to know if th…

Post by 1970-01-01 » Tue, Sep 02, 2025, 4:09 AM UTC

MuffinFlavored wrote: post #27

1970-01-01 wrote: post #15

No. Aftermarket ECUs absolutely exist for almost all internal combustion engines. Other aftermarket modules are rare. Integration of them into a complete system even more so.

> Aftermarket ECUs absolutely exist for almost all internal combustion engines. 2025 BMW G80 M3 has an aftermarket ECU? Audi RS3? Mercedes E 63 S? Immobilizer baked into the gateway and transmission and ignition, etc. etc.