Take your door panel cover off first and then take your switch off the panel cover. When you get your switch off take it apart somewhere where you can found the parts so that you want lose anything inside. Another words not in the grass. Once you have it apart clean the tips of the switch with sand paper or emory board. My problem was the two plastic pieces that push down on the copper tips. One was long and the other was melted a little shorter. It could not make the other tip when pushing the switch. What I did was trimmed the long down to match the shorter one and then stretched the spring just a little bit to make up the difference. Hope this helps.