Seat warmers on drivers side have gone out. How do you fix or replace?

Depends on which model car you are talking about, some do most don't. The mirrors and seat warmers are more likely to be on separate fuses.

Usually the has to be replaced and make sure to clear all trouble codes

i don't think there is a recall but there are after market companies that make kits to add them to a car they can be used for repairing them cheaper then factory ones

I would imagine that if you only felt the extreme heat in two specific spots on the seat, the element may have burned out and you basically have an open curcuit. According to the wiring scematic, the elements in the back rest and the seat itself are connected so neither work now. I've tried removing the leather from my seats to figure out if I can just replace the elements, but the elements are molded into the foam in the seat. Your only solution may be to replace the entire seat or to buy a seat warmer. Most of theseheat warmers are rather cheaply made, though.

THERE IS PAD UNDER THE SEAT CUSHION THAT NEED TO BE REPLACED YOU HAVE TO REMOVE THE SEAT AND THEN THE CUSHION TO GET TO IT

Has anyone worked on the driver's side door--maybe to do bodywork or to replace the window regulator? The plastic moisture barrier may be damaged or improperly reistalled allowing water to get into a connector or the switch for the seat heater.

try swopping the feed wires around and run the passenger one over to teh drivers side

2005 Ford 500 Limited can't start due to anti theft device, is there a reset I can hit

There should be plug for the heated seat most likley under it or on the drivers side of passenger seat. This should fix your problem, if it doesn't that means the short is in the dial in the dash. There should be a seperate fuse for each seat in the fuse box. If unplugging the seat doesn't help come back and i will figure out which fuse is the right one and where your fuse box is.

The most likely cause is the seat heater elements, they either have excessive resistance or are open - id recommended replacing both driver side element - upper and lower