A track assembly includes the rails, the locking mechanism and, on power seats, the drive motor and gearbox. Reinforcement plates and cross-members, which spread the load into the floor pan, are listed in this group as well.
The common failures are mechanical. A manual track loses a detent and the seat slides under braking; a power track strips a nylon gear and moves in one direction only; a frame rusts at the floor mounting points and fails an inspection. After a collision the tracks are frequently bent even when the seat looks fine, which is why they are replaced as part of a structural repair.
Power and manual tracks are not interchangeable, and a track for a seat with a memory function carries position sensors that a plain power track does not. Confirm the seat type, the side, and whether the vehicle is left- or right-hand drive before ordering. The mounting bolt pattern to the floor is the final check.
