Well, looks like this problem is following the exact path as Byran's car and maybe Michael's too?

Started the car up this morning and all seemed OK, the fan works again (its is a cool 60'ish outside). As a note, the air temp up here in Tacoma reached its highest since I have owned the car reaching the high 70's while the problem occured, so maybe this temp sensitive (wiring, relay, switch)?

Michael, can you please elaborate on the tensioner cause and correction?

One last thing, where is the 30amp fuse?

Well I just got back home after traveling, so it's time to try and troubleshoot this issue.

Can anyone give me some details on what switches or wiring to check?

I remember someone refering to this being a common problem in the W124 model, is it true?