My seat belt got stuck in the front drivers side door when closing it. Now the door locking mechanism is stuck. The door won't even close! What can I do?

They have been a known problem and need to be lubricated often. There may even be a technical service bulletin on them , check with dealer for possibility of any partial extended warranty regarding those hinges.

If the door wouldn't close how did you close it to lock it and have to exit out the passage side door? Anyway if the door is open like you said and it's locked you can easily access the locking mechanism without removing the side panel. It's on the side of the door, not the inside and not the outside, but the thin strip visible only when you open the door. There will be two metal pieces that clasp together. You can separate them manually, this will unlock the door.

Push in the door button. While pushing in the button, take a screwdriver and pry up on the door mechanism on the end of the door. Should unlock and allow the door to shut again.

2005 Towncar SRS Code 33 (3 flash + 3 flash, repeat this set for twice. then Beep 5 times pause x 5 = 25 beeps every 30min).

This means you have problem with left (Driver) side pretentioner (Seat belt retract system).
It doesn't mean physical belt or retract mechanism.It is just bomb wiring which is part of airbag system.
When airbag deploy, passenger must stay tight in seat otherwise body lean to front then slam back to seat by airbag.
if belt is loose or delay to lock, passenger's body rocks back and forth.So, system use small bomb (Fire power) to lock and retract seat belt when airbag deploy.There is small bomb and igniter in part of Seat belt retractor.
Code 33 is warning for this part on 2005 Towncar.(older model is different meaning in Ford/Lincoln, it's possibly passenger side airbag system for earlier model)
Before you work for any part of Airbag system and touch any "Yellow connector", * *Disconnect battery (negative side is good enough) and wait at least 5 min to clear all power in system**.(Airbag store back up power for few minutes to be able to deploy even in case if power disconnected)
by the way, you should move your driver seat most forwarded position before you disconnect battery to make it easy to work with seat belt.
locate driver side seat belt retractor (in center pillar between front and rear door, you may have to fight with weather strip)

Locate Yellow connector on bottom of Seat belt retractor (it's called "Pretensioner")it is located on very bottom of rear side of retractor.
only one yellow connector. (make sure your battery is disconnected)
Check its physical connection or looseness.if connection looks fine, you may have to replace whole seat belt ($180-$200 in Lincoln dealer)
You can check if pretensionor is good or bad by regular tester, but unless you know how, I won't tell (because I don't wan't you to blow out pretentionor).

Your childproof lock have nothing to do with the latch not closing. It only makes it where you can not open the door from the inside. I would think you are in need of a new latch.

first make sure the bolts which hold the latch mechanism to the door are firmly screwed in. if that ain't it, remove the post which it clamps onto from the door jamb and switch it with one from a back door. close the back door firmly, lock it and never use it again. if that ain't it go to www.getsaturnparts.com and buy yourself a new door latch mechanism and pay an auto glass shop to put it in for you.

Window fuse's and relay's may be up under driver or passenger side dash or behind glove box, under the hood and even under the seats, and finally on the ends of the dash. All passenger power windows and locks are controlled thru and get power from the master control switch on the drivers door. Could be a broken wire in the rubber boot going from the door to the body. You will have to eliminate each till you find the culprit. Check that all switches return to neutral when released. It could also be the body control module.

Two things happen. One the latch is already latched and therefore it's closed before the gate shut, When you try to close it you might notice that the door don't close all the way. This doe'snt have to be thwe case. the other thing that happens if the lock mechanism is working, You here it click? The latch is stuck as the opener is stuck. You might get lucky and spray the latch with Blaster or other rust buster type penatrant. Theres angles though the opening of the latch . Spray on several angles and repleatly close the door trying to vibrate the Penatrant into the stuck area. Looking at the latch use a screw driver to move the latch and see if you can cycle it though it's positions to see if you can latch and unlatch it with the tool and reopen by pullung the handle ( you may need to try ther inside handle too and even the remote openner if you have one. Ussaaaly you need to push the button twice to open the rear hatch so it may take a few trys and spraying to get it to come loose.. Some vehicals stay closed a long time and stuck is the way to think.. But if the door is used often the linkage inside the door mayh have come off the the latch is closed and the linkage doesn't open the laTCH AND THE THING MANAGED TO GET CLOSED WITHT THE DOOR OPEN.

Take seat belt out of door jamb...

j/k

open the handle like you are trying to open the door, then get a screwdriver, and flip the latch back to open. It is stuck in the shut position. Hurry before it rains.