Switch on the iron. Set it on the coolest setting and let it run for approximately 10 minutes.
Place a thick sheet of paper on the wrinkled area of the leather seat. The paper will serve as a pressing cloth to prevent the leather from overheating.
Switch off the iron and move it over the wrinkled area for three minutes to reduce the appearance of wrinkles. To prevent burning the leather, be sure to keep moving the iron over the wrinkled surface, instead of keeping it in one place.