1997 m3 help please!!!!

I recently got a 1997 m3... i have a few problems that i need to fix.....
My left window one go up or down because it a new window and the person who sold me that i just need to resent the security feature to make it work...
Is this true and how do i fix it myself...?????

and my moonroof works sometimes, sometimes it just wont open what can i do????
Can it be a fuse ??

And is the airbag light alwys on when you drive????
thanks


and is it hard to do an oil change and transmission fluid change on a m3 myself??????..thanks

Oil change is easy, just remember the M3 holds more oil than average so the regular 5 quart pan will not hold it all. Buy quality oil filters that have the o-ring in the box. Autozone, checker etc all sell good filters but they do supply the o-ring and copper washer for the housing.

Manual or automatic? Manual is supposed to be good for life of xmission. Fill plug on side of manual is difficult to reach for filling but not beyond average guy. Auto should be changed out in either case go with synthetic fluids. Hit book store and get Bently manal for your car, follow recommended fluid types for your year and model.

lol my last name is grimes and my dad has a 97 M3