2010 Mercedes GL-Class Owner's Manual - Page 226

224 Useful features X X Press the seat cover down until it engages. Make sure the seat cover is engaged properly by folding the seat all the way in and out. Controls in detail To allow the use of these devices in the vehicle, infrared transparent areas : are placed in the windshield. Seat cover under third-row seats If something falls under the third-row seats, you can remove the seat cover in order to reach under the seats. Example passenger side X Removing: Fold the respective seat halfway in or out (Y page 201). X Reach into the recess in the seat cover. X Pull the seat cover in direction of arrow. X Remove the seat cover to reach under the seats. X Installing: Fold the seat halfway in or out (Y page 201). X Put the seat cover back into place using the guide pins.