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Mine has the problem every so often where it just doesnt work. Try again later and its fine.... Irritating at best.
Check the large plug/harness under the seat, it may not be connected securely. Don't unplug the yellow one if your car has one, that's for the side airbag.
So i replaced the fuse and the seat was able to move back and forth! I was stoked. Then i attempted the lumbar support (which previously wasn't working) and i heard the motor attempt to move the lumbar support. It never moved, so i thought, cool; ive got a functional power seat at least. Then it stopped working. I went and checked the fuse and it was blown yet again! What is going on!?
Lumbar switch/motor is probably shorted or the motor is restricted to where it causes an overload.
This. If I were you, I wouldn't touch the lumbar support or you'll probably keep blowing it. And fixing it will be pricey as stated above unless through a junk yard or online somewhere possibly like rockauto.