1995 318i Door Locks, Fan Motor

My 1995 318i has power door locks, but the driver's door lock is really
frustrating: when sitting inside with the doors closed, it functions
perfectly....push down, and the other three door locks come down and all
doors are locked...pull up, and all door locks come up, and all doors are
unlocked. The trouble is when I try to unlock/lock the doors from the
outside turning the key in the driver's door ( all works fine using the key
in the front passenger's door, by the way)....turn the key either way, and
nothing happens, and I can't leave the vehicle because the damn door won't
lock, and the other doors won't lock.
Now for the heater fan motor: it is loud, and seems to rattle. Is there an
easy way to access the blower motor,without pulling the dash apart, so I
can see if the fan blades are knocking against the housing? I'd also like to
replace the fan motor selector dial...it seems to operate intermitantly, and
with winter near upon us, I know it'll fail on me just when I'll need it.

Thanks

Just guessiing but I have similar issues with my 1990 325ic and it is the key lock cylinder. Remove inner door panel and then remove key lock cylinder. Shut door and from inside, reach up and find the little fork on the door lock that the leg on the key lock cylinder engages and see if you can then lock/unlock door using your finger on the fork. If that works the key lock cylinder is bad. Good news is that you can buy a rekeying device for the lock cylinder ( guts for inner part of the cylinder as well as the little lugs that code the key) from the dealer and still have the same key for all locks. Before yu buy a re-key repalcemnt try and lube up the cylinder and see if that helps.