Recently, I took my '05 Toyota Avalon to a car wash. The people at the carwash moved the driver's seat all the way up to vacuum underneath it. When we moved the seat back, something is now sticking out from the track that the seat sits in. It looks like a plastic rod and when the seat is all the way back, it is about the size of a pen. If I move the seat forward, it disappears, but when you move the seat back it sticks out again. I cannot figure out how to make it go back in the way it was before. Is this something easy to fix, or do I need to take it to a dealer for repair?