Hi. I have a 2006 TL. When I try to move the driver seat forward or back, the track closest to the door will move, but the other won't. I originally figured that there was a coin trapped in the right track. I took the seat out of the carand inspected. It's a closed track so my theory is wrong about a coin. I'm guessing that there's a motor for each track and the one has died. Any thoughts on troubleshooting this? Thanks.