I have a 2012 GL350 and today noticed a dark thin line across the entire screen in the middle. Does this line indicate the screen is going out and what options are available if it’s near the end of its operating life? I noticed new screens on EBay for $350.00 but does this resolve the issue? Any suggestions would be greatly appreciated.

the rubber connector/ ribbon between the pcb and the screen inside the headunit is failing. It can stay like this or it can deteriorate in various ways ranging from annoying to rendering screen useless. A new screen will fix the issue.

So will this resolve the issue?

Thank you for your response! Any videos or information on how to remove and replace the screen?