2010 town & country ignition key will not release

SOURCE: 2002 Chrysler Town & Country starting intermittent

I assume you've checked all connections from the battery and starter to make sure they are clean and tight. It is a little weird that you do not have trouble starting in neutral yet you get a clicking sound in park. My first thought would be the neutral safety switch on the transmission but you shouldn't even get a click in park if that is bad.

One possibility is the contacts in your starter have worn down and are causing too more resistance (explains the clicking). At the back of your starter is a metal cover that is held on by three tiny bolts (6mm). Disconnect the battery first! (You might have to remove the starter to get to this part) Remove this cover and pull out the plunger assembly. Underneath are two brass plates. Compare one plate to the other. If one is noticeably thinner then it could be the cause of the clicking. You will even see a round groove in the plate. You can buy the plunger and contacts from this website: http://www.nationsautoelectric.com/densoparts.html or you can opt to get a starter from your friendly auto parts store. The first picture shows the bad contact on the left. Notice the groove, the metal has become really thin there. This picture shows a pitted plunger assembly. Always good to replace it too.This picture shows all the new parts installed.

SOURCE: Ignition key will not turn

Thanks to the person with the wd40 suggestion. stuff that little red tube right up there and liberally spray. I just had the panic when I went to drive to the store in my 98 town & country and the key didn't turn. I read lots of varying solutions and was ready to get the emergency locksmith out here to replace the barrel and then I stumbled across that suggestion here. It made so much sense...and it worked. The barrel will probably still need to be replaced at some point, but not urgent.
thanks again!