2002 325xi Touring. First time BMW owner, I bought this awesome car from a friend a couple years ago, 110k miles. The rear window wiper AND defroster both don't work, never have for me. Struggling to get a handle on the situation. So far I see entirely different diagnosis procedures and...

2002 325xi Wagon. I bought this awesome car from a friend. The rear window wiper AND defroster both don't work. Struggling to get a handle on the situation. So far I see entirely different diagnosis procedures and fixes for these two problems. BUT -- any ideas (other than coincidence) why...

when i start my car, the rear window defroster turns on. is this automatically programmed into the car (because the temperature outside is 24 degrees Fahrentheit) or is it something i can control?