4 DOOR. Adjust knob. beige. Left.SEAT BACK COMPONENTS. Right.SEAT BACK COMPONENTS. to 12/07. w/folding seat. w/o folding seat. A Knob on the side of the seat that is used to manually Adjust the seat lumbar position. Handle used to Adjust the recline angle of the seat back. Release. Seat Back Recliner ment. Seat Lumbar ment.