My jeep is a automatic and will not go to park? What could be causing that problem?

Rainwater body leaks can be a nightmare to locate and I have many times needed to remove seats and carpets and lay inside with a flashlight while an assistant played a hose on various parts of the outside...

You could be luckier.
Water usually doesn't run uphill but a leak can travel quite a distance along body seams or behind trim or under carpets before manifesting in a pool - often a significant pool of water in a footwell can amount to only a couple of drips each minute and not a flood so patience is needed...

Apart from such obvious sources as sunroof drains, roof aerial attachment, failing windscreen bonding, one of the most common causes is blocked heater air intake drains. Much of my time servicing vehicles has been spent removing dead leaves from the heater intakes before they cause trouble...

Good luck!

How about learning to drive the car and not worrying about the Parking Assist...

How about checking your Fuses?

I can't imagine how the drifting in park and the starter won't crank the engine could be related.
It is possible something happened to the flywheel and it is not now connected to the crankshaft, or the bendix gear on the starter is not engaging the flywheel.
But the transmission has a pawl or gear that locks the output shaft of the transmission when the shifter is in park. That gear could be damaged and would allow the truck to roll in park.
And the parking gear would not have anything to do with the starter issue.
I think I would check to see if the flywheel is connected to the crankshaft first.
Is the truck still under warranty ??

ditto and say first if stater works at all cranking word.
and if not cranking do so in NEUTRAL when park ever fails.
wild guess car is not cranking
and step 2 is for most is jumper cable to 2nd car jump starts.
the starter can jumper wired cranked too key off
to simply test the starter I just saved you $100 and skinned up knuckles.
fuses good too.
yes I have the shop manual on jeeps
i own same jeep is 2010 and is same.
there are 6 causes, just 2 tests gets you to 4 causes.
ask how.
back later.

My comment is about the anti theft. Our 06 cobalt was having problems with anti theft with my wife key. My key worked fine. Try another key cheep fix if it works. If another key is made have it made from manufacturer key at dealer. Make a new key from your key you may duplicate the issue.

Sounds like the fluid is low...have you checked it? (check running in park, warmed up)

refer to
http://askville.amazon.com/2006-Jeep-Liberty-Sport-stuck-park/AnswerViewer.do?requestId=3458924
discussion here,
http://askville.amazon.com/2006-Jeep-Liberty-Sport-stuck-park/DiscussionBoard.do?requestId=3458924&page=1

check motor mounts defective ones can cause engine to vibrate

Okay, being a 2005, you probably dont have a speedometer cable. Instead, the speed is indicated on the dash by a wheel speed sensor that sends a signal to the computer that in turn is translated and then sent to the speedometer on your dash.

If you disconnect it, it will cause issues as the computer needs that signal to determine such things as when to shift the transmission (if its an automatic). So it could potentially cause several issues.

Sounds like your ignition interlock cable needs to be adjusted.