02 Tundra won't shift into 4wd, no lights

When I push the button, nothing happens. No lights, no noise, nothing. Fuse is good. Never had this issue before. Anyone have anything similar? I pulled the climate control to check out the switch, but it's part of a circuit board and not a simple switch.

 

Well I found out that the 4WD ecu went bad. Wasn't getting any power out of it. Changed it and it worked like a champ. Just wanted to update.

 

Where the heck is the cpu?

 

It's in the kick panel on the passenger side at the very right. Have to remove the molding for the carpet, then there is one little screw cap. Have to pull the kick panel molding off and it's right there. It slides off the rails that it's attached to. I'll post a pic tomorrow if you need

 

Wow I had no idea there was one that’s good info to have in case one day I get the same problem you had.

 

Do you have a part number?

 

here's one that sold recently. Its a good P/N..

https://www.ebay.com/itm/353442433648


Welcome to the club!

 

Part number 89533-34010
Computer, 4WD Control