dcbwhaley wrote:
I could advance a good argument that there should be no light switches at all on cars; all the lights being controlled by an LCC (lighting control computer) with the aid of a few photodiode sensors. ( I suppose that you would have to have a manual parking light switch but that would only operate with the ignition off)

NOOOOOooooooo!
I make my living fixing all this techycrap when it goes wrong. And frankly I hate it!
“Automated lighting computer” where decisions are removed from the driver and there is no manual override!??!
Heres how it will work.
The LCC will cost a minimum of £300 to replace if it fails.
It will be located in some utterly inaccessible part of the dashboard requiring a minimum of 4 hours work to remove/replace it. (or even to confirm that it
isnt the problem! Think about it!

)
It will be “coded” to the immobiliser, if it fails for any reason you will be unable to start the car (so you will need to be recovered by the $tealer- another £300)
Since it is “Coded” you will not be able to use S/H parts from the breakers! Only new parts from the $tealer will work AND it will need to be programmed by special $tealer only equipment. (For which they will charge you yet another £100)
Oh, and lastly, they will start dropping like flies six months after the extended warranties expire (say after 5 years or so!)
Trust me! I am NOT exaggerating! Many post-2000 cars are ALREADY like this with the electronic dashboards, electric PAS, electric handbrakes ETC ETC ETC! I come across this sort of thing regularly now!
We need yet more mission critical techycrap like we need collective holes in our heads!
The idea that we need to replace a £10 switch with hundreds of pounds worth of sensors, computers and whatever in order to make the world a better place is an absolute nonsense!
Now, don’t get me wrong. I am not fundamentally opposed to gadgets and luxuries, but the basic role/functions of a vehicle should be kept as simple as possible and operate independently of the toys so that older vehicles can still be used when the toys start to fail and they are not worth fixing.
I have an old Jag; originally it had an “autosensor” headlight mode. This has now failed, but at least I can still use the switch. Otherwise the cost of repair (along with the electric windows, which have also died!) would likely be greater than the value of the car!
Removing the manual option is a
VERY BAD IDEA!