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Discussion Starter · #1 ·
Speedometer Trip computer Car Odometer Tachometer


2007 Toyota Tundra Limited with 4x4 212k miles

been having this really intermittent issue where usually on first start up the dash lights up like a Christmas tree (no check engine) and then typically after a little driving or even just turning it on and off again it goes away. This only started occurring after multiple weeks of very wet and humid driving conditions so I'm almost positive moisture has gotten somewhere it shouldn't be. the 4x4 system works perfectly when the lights arent on and switches between 2x4 4x4 and 4x4lo with zero issues and does so how designed (I have confirmed that the front wheels are in fact engaged and getting power). I've cleaned and checked wheel speed sensors and the connectors on the transfer case so at this point I'm just confused and ready to ride it out till whatever is wet dries out again as the truck doesn't go into limp mode or anything.

Trouble shooting:
The battery is healthy via both voltage test and load tester
Disconnected battery
Cleaned connectors on wheel speed sensors all seemed in good health (IDK if there is a way to check if an individual sensor has gone bad)
cleaned the connectors that go into the transfer case all seemed in good health

Ideas?
 

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Discussion Starter · #3 ·
That will be a brutal thing to find being so intermittent. If it were me, I’d wait til it happened more frequently to ease the troubleshooting, unless you can grab some codes when the lights pop up. Good luck.
I did find some codes and talking on another forum it looks like the computer believes that a cut or some kind of disconnect has occurred in the rear left wheel speed sensors circuit. time to hunt I guess (or just leave it lmao)
 

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Discussion Starter · #5 ·
Well a bit off topic (but I hope you get this issue resolved) I have a 2008 LTD with same dash of course and I bought her new in that year. My daughter asked me if the Disney Dash was customized for me (she is a Disney enthusiast). I said no .. why ... she said I had a Mickey Mouse on the right side of the layout.

GEE THANKS .. I never noticed it before and now I can't UNSEE old Mickey. Hope this don't happen to you! haha
Well looks that will be two of us forever seeing mickey on the dash haha
 
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