oil separator symptoms

[BlondyFA]

I'm new here and really learned a lot reading all these posts. So, thank you
I believe I have this oil separator problem. I live in Kansas City and it's been sooooo cold here. I started my car the other day, I have an X5 4.4. I let it warm up for about 15 minutes. The temp outside was about 5. I put the car in reverse to back out and it's kind of sputtering....I pull forward and notice a huge amout of smoke coming from the exhaust. I freaked out, though it was on fire! I get out, look...the check engine light is flickering off and on. I immediately park the car and turn it off. Run in to call my husband who is in DC working. He doesn't answer. I go back outside and take a look and there is a HUGE oil spill underneath. I haven't taken it anywhere yet...waiting for my husband to tell me what to do. I know I can't drive it. I should say my drive to work is less than 5 minutes, that's why I always warm it up before leaving. So, from what I have read here, I believe I have the oil separator problem. Does anyone know how much this costs to repair? Seems like any repair is at least 2,000! I've had my share of problems with this car...I was hoping to get a break for a while. It's a 2002 with 115,000 miles.

Here is a short list of things wrong with it right now.
Rear left passenger window just fell down. I have it duct taped up....real classy, huh?
Windshield wipers just stopped working. The right one doesn't move at all....the left ones moves about 3/4 of the way.
The key remote has never worked...about 1 week into owning the car the door lock fell in. Now there is a hole where the lock should be. We took it back to the dealer and they had to "order" the part. Well...my husband was deployed and we just got back to KC in October....so the lock was never fixed...oh and it took 4 months for them to get the part in!
We also had a fuel sender problem...they were replaced about a year ago....cost 1200.00. I can't remember the exact thing that happened a month after the fuel senders....but that was over 2000.00!!!

I LOVE this vehicle...but it doesn't love me and I wish I could sell it

Any help is much appreciated.