Has anyone else had electrical & other problems that come and go? on 2003 Ford Explorer

Sometimes the turn signals on my Explorer stop working & start working again out of the blue. In the next few days, my car gets stuck in park. I have to manually unlock it on the bottom of the steering wheel. Then it stops doing it. A few days later, the door ajar light goes on & won't turn off. After a few months it starts over again. What is going on?

Asked by for the 2003 Ford Explorer
Thanks, I'll have thwm check that :-)