Possible Causes

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

A driver power seat that does not move horizontally and/or vertically can be caused by:

Wiring, terminals or connectors.
A faulty seat control switch.
A faulty seat track motor (seat track).
A faulty power recliner mechanism.