check for a live and earth in a 2 pin plug under seat (drivers side )not yellow plug thats the pretensioner for the seat belts other for heated seat unusual for motors to go (2 of them ) normally wire caught in seat runner breking connection hope this helps (fuse 28 30amp ) under glove box if blown
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.