Shift to Park Warning keeps coming on Out of about 12 trips daily in my 2011 Explorer Limited 19K, at least 3 or 4 times each day I started getting the message "Shift to Park" along with a warning chime after pushing the lever to the park position and turning off the key. I have to move the shift lever around and sometimes restart and re-shift to park. I know its warranty, but I am concerned since you can't seem to make it happen on demand, but at least 20% of my trips end this way, and it takes sometimes a minute or two messing with it to make the chime and warning go away. Looking to see if this has happened to anyone else, or is just a fluke on my Exp, and can it be easily fixed? Thanks!