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My warning light on my dash poped on today driving to work telling me to "service my 4wd".....I was driving in 2wd and havent been in 4WD for about a week..... Anyone have any ideas why this poped on or what could have caused it to pop on? I have an appt with the service guys (im dumb when it comes to vehicles) next week and want to know if I should be driving around that long without having it checked....anyone have any expierence with this?
 

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Yea, unfortunately my 02 TB LT has this problem too. Every few months, it will give the Service 4WD light and the 4WD switch will not work. I always intend to go to the dealer and get the computer reflashed, but never get around to it and the 4WD system always comes back in a day or two, no lights on and the 4WD works. I suggest getting the computer reflashed to the most current software, it will probably cure the problem.
 
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