Windows and sunroof go down all the way when car is shut off.

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My drivers side and passenger side windows and sometimes my sunroof open after my car is shut off. Sometimes after days of sitting with no problem sometimes happens within minutes of shutting the car off. Sometimes just one window will go down and not the sunroof . Sometimes both . Also the door locks will pop up while driving . It seems that this tends to happen when it's warm outside but doesn't happen as much when the weather is cooler. I have done the window re set procedure so I know that's not the problem . Sometimes the car will go weeks and not do this then when it does it does it over and over for days then kinda quits for awhile. I've heard its a bad SAM unit . I was a mechanic years ago but never worked on Mercedes Benz and this makes no sense to me.