Cruise Control on 2013 Chrysler Town & Country

I'm quite sure this is a software problem but; has anyone experienced not being able to turn ON the cruise control? I'm not asking about engaging or setting it. Sometime I cannot get the cruise control to turn ON until the vehicle is over 40 mph. Other times it can be turned ON or OFF in Park. I plan to return to the dealer but I would like to know if this has been a problem to others.

Asked by for the 2013 Chrysler Town & Country
2 answers
Have used contact spray cleaner, if it is the contacts might be dirty. They might be burned.
I wish I had an cost is over $500. It will sometimes work but you have to put it on before you have gone very far. Can anyone help with this. ..where are the contacts ?