I went over speedbumps I saw to late and the rear headrests popped up with the top closed. What is the procedure to release the rollbar?

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2008 S550
2010 GLK350
1997 E420 (retired)
2005 CLK500 (retired)

You need the little tool that came with the car (looks like an allen wrench, but is not an allen wrench). If you dont have the tool a long 1/4 extension will work too. You have to crawl in the back, and look at the sides of the headrest(can't remember if its the inside or outside side), you will see a small line composed of stitching. You have to insert said tool (or 1/4" extenision) where that line is. When you press down on the release tab with the tool/extension, you have to press down with the headrests at the same time. Hope this helps.