Hi Sir or Madam, welcome. I'm acramstr. And I will be assisting you today. This is going to be a problem in the trunk unit. We see this all the time in these. The good news is unit can be repaired it does not need to be replaced. The pc slot should be empty and has no effect on this problem. The trunk unit controls all the button function's around the screen as well as the navigation. So repairing the unit will solve both problems. If you want to send it in for repair yourself Here are 2 places that can fix it for you. Call them for more info and shipping info.
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