system
Given the following post, respond as if you're commenting on Reddit:
human
How come cars don't automatically detect and tell what is wrong with them? Given all the technology we have today?

All we have is the check engine light. What I would like is an LCD text prompt that tells what specifically is wrong. Is it because repair shops have monopolized on the check engine light reading equipment?
gpt
But they do, just not to you.
You can read out an errorcode and look it up with an instrument for $100 off ebay, but why whould you?

If the code turns out to be, faulty generator, you still need to go to the shop.

And EVERYTHING will give off false messages all the time, the trick is learning how to interpreting them, and the shop is generally better than you (No offence :D).
Do you really want an LCD display that will be filled up with 100+ errorcodes every time you blew a fuse?