I have a 2004 mountaineer and both back windows are not going down.had this problem before but was able to break seal and make them work.but not this time

I had this problem it was the switch on the break pedal it would move just enough so the break light did not come on but the cruise would not work

You have a bad seal in your break booster unit,, just behind your master break cylinder is a big roung doughnut looking thing, this unit works off vacume from the engine, it helps you push down on the break peddle so its not so tuff to stop! well on that booster unit there is a seal that keeps the unit from loosing vacume past the rod leading into your break peddle, sounds like this seal is leaking vacume .. you can replace this unit your self if you want to tackle it, its going to be some work to replace and you should probley have the manual on this truck to do the work.
Hope this helps! Good Luck!

A bad fuse is Highly possible the cause. The mountaineer has a Main fuse box under the hood that contains Master fuses that control multiole items with one fuse. There is also a smaller fuse panel under the dash conatining fuses for various items throughout the vehicle.

This should be a warranty issue, go back and complain, nicely.

Being that they all went out at the same time, check the fuse.

they can go bad-swap it out with another that you don't need, just to try and see if it is the relay-listed are relays that might only control, for instance, the rear window defroster-generally, relays are all the same, some just get used heavily and some don't (i.e., ABS)-worth a try

Hi
it happen with me also actually the problem is the power window get jammed from the inner part..... you if you able to open it just open now clean it well then spray the lube into it and for a long time it work properly..... thankyou

can you hear the motor trying to work the window? A fairly common problem is the window regulator breaks. this is the cable operated lifting mechanism that raises the window, when it breaks you can hear the motor winding away, accompanied by a faint clunking noise as the motor tries to operate the mechanism. They are quite difficult to replace.
if you cannot hear the motor working (also assuming all your other windows do work) then either to motor is faulty or there is no power to the motor. the wiring inside the rubber boot that goes from the car to the door (by the door hinges) is prone to breaking due to the constant flexing back and fourth as the door is opened and closed. switches can also fail, you may be able to swap the drivers/passengers switches around if they are identical for testing.

NEED TO REPLACE THE HEATER CORE..JIM,OR IF THIS JUST HAPPENS WHEN USEING THE AC THEN YOU HAVE A PLUGED DRAIN FOR THE AC

you'll need to remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. Then pull back the weather seal (can't reuse it, but it's not that important) and you will be able to access everything.