this post was submitted on 19 Jun 2026
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Modern vehicles have evolved from mechanical machines into complex networks of processors, sensors, and code.

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[–] boonhet@sopuli.xyz 1 points 2 months ago

Well there's still like 2 or 3 computers on it most likely if you go by the definition of computer automotive journalists like to use.

PCM for sure, but could also have TCM if auto, ABS if equipped might have a computer, potentially some kind of BCM...

When they say a modern car has 100 computers, most of those are actually fairly simple controllers and the reason there are so many is that you can just route canbus and power to them and then run the necessary wires to the sensors and actuators from the modules instead of running a bunch of wires from one single controller to everything. Keeps the harness simpler and lighter.

My own 20 year old car has 26 "computers". 4 of them are door controllers that just actuate windows, locks and mirrors.