I have had an intermittent problem, sometimes the power seats do not move. Then suddently they work again. They both do the same.
I troubleshot this last weekend and there's a relay that causes the problem. Its purpose is to give 12V to seats only when either the key has been turned ON or when either door is open. Not very clever IMO as this may cause other problems, e.g. in another thread this is the cause for power leak draining the battery slowly due to a stuck door switch, in my case it was not nice when trying to move the seat and nothing happens then.
The relay is a black plastic case relay located below the dash, left side of steering column. The problem with that in my case was a broken solder joint. Relays are notorious for that. This broken solder joint was then intermittently breaking the connection thus preventing the seat movement, after a while it would work again.
The relay can be easily changed but it can also be repaired. Just pry the case open and resolder all the joints, at least the big ones. And it may be even better than a new one.
I troubleshot this last weekend and there's a relay that causes the problem. Its purpose is to give 12V to seats only when either the key has been turned ON or when either door is open. Not very clever IMO as this may cause other problems, e.g. in another thread this is the cause for power leak draining the battery slowly due to a stuck door switch, in my case it was not nice when trying to move the seat and nothing happens then.
The relay is a black plastic case relay located below the dash, left side of steering column. The problem with that in my case was a broken solder joint. Relays are notorious for that. This broken solder joint was then intermittently breaking the connection thus preventing the seat movement, after a while it would work again.
The relay can be easily changed but it can also be repaired. Just pry the case open and resolder all the joints, at least the big ones. And it may be even better than a new one.