I replaced my driver's side (master) window/lock/mirror switch recently because all three other window switches stopped working. They still opened fine using the master switch, so I figured that was the problem. It was, and all the window switches work properly now. The problem is when I use the auto-down feature on the driver's window (second click of the switch), the motor no longer cuts off after the window hits the bottom stop. It's as if I were still holding the switch down. I can verify this because the other windows operate more slowly after I auto-open the driver's window, and they'll speed up to normal if I open the driver's window just a hair, as it cuts off the motor when I reverse the direction.

Any idea what's going on here? Faulty master switch? I think it's a Crowne switch, so it's not exactly Mopar.

 

I think you are having the same problem that I was having in my '00 only going up not down.
It would not auto stop and trying to keep going up as long as I kept my finger on the button.
New regulator solved that problem. What is wrong with the regulator that causes this I have
not been able to determine. Played with a bad one that did this one day and nothing jumped
out at me.
I have had been luck with the Napa regulators which are just rebranded Dorman one.
No surprise there. First one lasted 6 months, second one 6 years and now I am on my third.
They have a lifetime warranty so it is not that big a deal because it is a relatively easy job.
I think when this one craps out though I am going to try this one.

 

What has me wondering if it's actually the regulator is I could swear this problem only started happening when I replaced the driver's master switch. Could the switch cause this issue? I suppose it's possible the regulator was on its way out and me removing the door panel caused enough disturbance to put it over the edge. I still have the old one switch, so I'll need to pop off the door panel and try the other one to see if that's part of the problem.

 

Be worth checking into.
Would like to know what you find out.