So I was going yesterday and I needed to use the rear wiper. I turned the knob and nothing happened. I heard a slight thud so I thought it was just full of ice. After driving for a while I tried again, still nothing. When I got a chance, I seen the wiper fell of the little perch it sits on and was rubbing the paint. I put it back on the perch and tried it again. It just keeps on falling down and after I put it back up it fells like something got a good grip on it. Not sure if its the motor or what. Not even sure how to remove it, I'm guessing from the inside. I swear there are so many stupid little things wrong with it. The light for the cruise on the left is burnt out, lumbar support buttons doesn't do anything but howl when i hit it, light for the parking and headlamp switch, defrost light for the switch, wiper sprayer switch, all burnt out and I need to get a better battery for the cold. This OEM one blows when it hits freezing. I am going down to ford today and get some prices on somethings. Hopefully I wont brake the bank.
OK, one thing at a time.
For the wiper function, it could be a bad motor, or it could be the spline sheared on the shaft. Flip up the plastic cover on the base of the arm, turn the switch on, and see if the shaft is moving, or if it's dead. From there, we can check a few more things, but start there and report back. Swapping the motor is a 15-minute job (8 screws and $40 from any auto parts store) but we want to be sure it's bad before replacing it.
Cruise light is simple enough to fix, parts are cheap, and there's a handy write-up on this site for doing just that.
The lumbar is either a blown hose or blown bladder..... pretty tough to fix, but not the end of the world.
The headlamp switch light doesn't usually last more than a year or so. I replaced mine a while back, but it wasn't fun or easy. Some on here have replaced it with an LED with mixed results... Doing a write-up this winter is on my 'rainy-day' list.
Defrost light and rear wiper light are similar to the headlight.... parts aren't available, and, again, repair attempts with LEDs have been mixed. That's part of my to-do list.
Battery-wise, if you're on your original 9-10 years later, you're doing quite well. Average life span of a battery in freezing climates is only about 5-6 years. There are plenty of aftermarket ones available for a reasonable cost. Mine's a $75 AutoZone house brand, and it works quite well. The first one went in in '02 after the truck sat for 2 years, and the second one went in last fall after a pretty harsh winter.
All in all, nothing really sounds out of line for a vehicle that's almost 10 years old!
Good luck!