Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.

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Why don't cars have diagnostic software loaded onto their infotainment centers? (lemm.ee)

submitted 2 days ago* (last edited 2 days ago) by [email protected] to c/[email protected]

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Modern cars have MASSIVE digital displays, loads of computers systems monitoring every subsystem and internal diagnostics running to the OBDII ports.

Why the hell can't we get diagnostic feeds on our console or infotainment center?

I'm not aware of any car manufacturers selling their own diagnostic ASICs, so it's not an extra margin to squeeze afaik...

What gives? Any insight into this beyond the usual muh corporate profits conjecture?

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[–] [email protected] 49 points 2 days ago* (last edited 2 days ago) (12 children)

There is a standard connector which existed before big screens landed in cars, the OBD2 connector. Dongles are cheap and you can read the output from your phone or computer. Some dongles support bluetooth. The connector is mandated in some markets and I guess that makes it less interesting to add a redundant interface inside of the car. It's fun to try if you're interested. Manufacturers can extend the error codes IIRC.

Tesla has a service mode on the display through which you can scan the car for faults, run a battery test, ... It is password protected but the password is publicly available.