key sticks ignition - cannot remove key until car cools after driving or startin

What is your question?

this has just started and you cannot remove the key - car starts no problem - it is just you cannot remove the key I have left the key in and in about 10 minutes can get key out

What makes this problem better or worse?

just started

How long has your 2007 Mercury Mariner had this problem?

a few days ago