I had to poke mine with a stick(actually a coat hanger)for a while until I had time to repair it. If the brushes get worn sometimes it won't start on it's own. At first I found if I was driving and flipped the fresh air lever back and forth it would start but as it got worse I bent a coat hanger so I could reach up behind the headlight and give it a nudge. Eventually I pulled the blower and replaced the brushes since I was too cheap to buy the $40 new one.