Power seat, adjustable steering wheel and heated seats not working

The passenger heated seat works? All the functions are controlled by the memory seat module, heated seat functions are through bussed messages to the climate controlled seat module. Since you have memory seat/steering column issues, I would suspect your source of problems to be from the memory seat module. Aside from checking powers and grounds to the seat module, I would first do a master reset on all systems. Disconnect both battery cables, and touch them together firmly for a minute or so. See if all your problems are resolved. You only have two elements per seat, and the heated seat switch is part of the climate control panel. To replace the switch/panel would be an expensive shotgun. It sounds like you have a logic lock condition, and performing the above reset procedure will correct the condition if that is the case.

Hey JUDYFAYE,

Before you go to the shop I think I found the problem. There is a ignition 3 relay that control both systems, and two fuses here is there location and a couple of guide to help you get the problem fixed.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Make the the fuses are getting power through them if all okay there is a driver side seat memory module that goes out I would try to find a used one and plug it in to see whats happens.

Here are the seat wiring diagrams so you can see how they system works and where the seat module is.

Check out the diagrams (Below). Please run some tests and get back to us.

Cheers, Ken

You will find a control module under the driver's seat for the heat. You can test output to the seat heater with a test light or volt meter. You can check the heat grid itself with a ohmeter. Hope this helps.

Do you have, or have access to, a fax #? If so, I can send you a couple of diagrams. I'm able to download to this site, but they are so compressed they're hard to read. Please advise.

I don't have access to your personal Email address. Everything has to go through the system. I tried downloading the seat diagram to my test site, and it was barely legible.

'98-'00 diagrams are the same. It's on it's way to your email.