seat heating does not work

friends 2004 model 307 xt the original leather upholstered of my car alone, the seat heating of my car does not work Passenger and driver side looked at the relay said they are solid master said it was broken in the seat says you think it could be like this.

Teacher, once you press the back of your seat with your knees and lie down and take things from the back or right will damage the resistants and will not work (and it is very sensitive, the seats, two seats on the right seat, 2 harmful, harmful) I need to remove the seats etc. etc

I understand but I'm thinking of getting it going