https://unity.com/blog/industry/automotive-hmi-template-take...
It might add up to a lot of money for the manufacturer who is cranking out thousands or millions of vehicles, but to the consumer buying one car it isn't a meaningful difference.
Then you had wiring each button wire I believe was $1. This wasnt 1 wire, but a few wires, power, ground, signal. Each button had them. This wasnt my job, so I didn't follow this price too much, but I asked the question at the time. I think going into the ECU, there is also a cost associated with it.
Anyway, you could assume 10 years ago, each button was $2. A car has 40-70 buttons? So its probably like $100 a car. Maybe $150 or $200 in today's money.
Also buttons and wires break, causing warranty problems.
At the time these vehicles were selling for under $20k at the bottom, and $40k at the top. So 1% of costs were buttons.
This doesn't even include the cost of hiring ~20 engineers to handle the buttons. ~6 people to check appearance and do testing... It doesn't include the assembly costs on the line. That 1% was just the cost of button + wire.
It's a good thing that doesn't happen to giant 15" integrated touchscreens. Imagine how much of a problem that would be!
That doesn't make sense. $1 uninstalled might make sense for a fancy custom-molded button, even if it's too much for a generic button. (I'd rather have some generic buttons with labels than use a touchscreen, by the way.) But there's no way a few feet of signal wire and the proportional share of power wires get anywhere near $1 uninstalled.
Also I can find entire car stereo units with 15 buttons on them for $15? That kind of integrated button is cheap, has been common in cars for a long time, and can control things indirectly like a touch screen button if that's cheaper than direct wiring.
Your after market has not been tested to react with sunscreen.
But also that kind of button doesn't need dedicated wires.
But for some reason people buy new nice vehicles and don't buy crappy new vehicles...
Touchscreen controls are crappy. They're less nice than ugly buttons.
(And of course people still buy cars with flaws. An entire car is an amalgamation of so many features that's it's hard to use purchases to measure people's reaction to the vast majority of specific changes. And features like controls often take longer than a test drive to evaluate, too.)
I have a late 90s Range Rover. It has about 12 buttons on the dashboard, most of which I never have to bother with (they do things that turn on and off the fog lamps, which I don't need to use, or adjust the air suspension, which I rarely need to use). I turn the lights off and on, and I switch the heating from "normal" to "BLAST EVERYTHING ON, FRONT AND REAR DEMIST ON, SEAT HEATERS ON, EVERYTHING ON, EVERYTHING ON, EVERYTHING UP FULL, WE'RE AN AIR FRYER NOW" mode.
What do you actually need an LCD for in a car?
Backup camera. They are required by law.