I suspect the purpose is cost savings by producing only one switch with a window in it for a light they eliminate the need to produce a switch with no window. Might be a savings of a penny or two per switch but multiply that by a few hundred thousand the pennies had up. Thus the saying about the "penny pinchers in Detroit". Guess they do exist.
I see this kind of thing all the time. Penny pinching... on another site I run http://www.fordf150.net the same topic comes up. Why did Ford remove XYZ? At least in Ford's case they were losing money hand over fist for a loooong time so that makes it somewhat justifiable.
I don't mean to step on any toes, especially since I'm a brand new member to the community! However in my 2014 Jeep Compass Sport 4x4, I bought the car slightly used and it had a missing lock button on the passenger side. Obviously I had to replace it or it would've been annoying me forever. I don't remember what it looked like prior but after replacement the window switch light indicator does stay on while I have lights.
$25 for a OEM replacement and 45min later [due to all the screws inside the door panel/tight fit of the switch module] I'm happy again.
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