2005 mercury montego...maybe electrical problem?

ok, this is on my personal vehicle…i dont dislike ford products but ive just never had a real good one impress me much than my first one…i started with a 1965 mercury comet two door rag top…very freaking fast!!!..my question is this…my drivers side heated seat wont work and everytime i go to push the button, it stays on for about 5 seconds and than goes out…thoughts and helpful hints would be most useful so that when this winter comes up, i dont turn into frosty the snowman when i go to my shop every morning!!!..is this common or just a fluke???