[Fit perfectly]The New repair Window Switch button driver cap are customized and designed for - W204 W212 , also it is molded by car,which seamless fits. [ Replacement]The Window Switch Button Covers fit perfectly, and you would hardly find any difference between it and the work. The item would be no color difference among other buttons on your control for your window. [ material]Made of ABS+PC material, which is more durable. [Easy Installation]Super to replace the worn-out buttons. make the style of the window switch control panel in the car as the picture you purchase. 100% New with high quality. Great replacement for the worn-out one. Easy to installation and fit directly. Interchange Part Number: 2049055402 Fitment for - -Class: for 350 2009 - 2012 for 350 RWD 2009 - 2012 for 350 4MATIC 2009 - 2012 A Window Fix Use A thin screwdriver or a ultra-thin key you push down lightly,you stick the key in just that in here and you it out just. Then you are going to the key or your little screwdriver and lightly pull up on the arm your window should raise with your car ignition in the on position make it is the is just a button broken. Finally,Make the front is kind of pointing down like I am pushing the button down and then on the back side you clip it in just. Material:ABS+PC colour:Black Package Contents: 1 x Left front window switch button cover 1 x Front right window switch button cover Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.