There exist numerous methodologies whereby a feline may be divested of its outer hirsute covering...
You can pull the broken switch out, leaving the wiring attached. Then check the wire colors and switch configuration. If everything looks good, cut the wires close to the old switch and nearer the plug on the replacement, and use good-quality crimp splices to connect the appropriate wires. Reinstall the switch in the seat - job done. Just don't tell the purists!
You can unbolt the seat and remove it from the car. This will allow you to "correctly" replace the switch, and to also clean, check and lubricate the motors, gears and drive cables. But - to unbolt the seat, you must move it all the way to the front and all the way to the rear. There are manual ways to do that - check for a hole in the lower front seat cover, with an Allen-headed drive screw behind the hole.
There are normally six Allen bolts holding the seat to the floor. They are usually Loctited in place, and you will often need to use a propane torch or similar heat to break the Loctite.
Be warned - it is all too easy to strip the heads of the Allen bolts trying to remove them. Use a very good Allen bit, and make sure that it is in straight and held down very firmly.
Be warned - if you do get the bolts out, that sucker is heavy. It is difficult and dangerous to try to get the seat out of the car by yourself.
As you might guess by now, I used the cut-and-splice method on my car...
BTW - If you do want to repair one of the seat switches, take it apart and put it together while working inside a clear plastic bag, such as a large ZipLoc freezer bag. That helps retain the flying springs and balls.
