How do you reset the rear headrest on a 2005 clk 500?

To reset the rear headrest on a 2005 CLK 500, first, ensure the vehicle is in the "On" position without starting the engine. Locate the headrest release button or lever, typically found on the side of the headrest. Press the button while pushing the headrest down to its lowest position, then pull it back up to the desired height. If the headrest is stuck, check for any obstructions or try manipulating it gently while pressing the release button.