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This means there is a fault in the four wheel drive system, the light reset's each time the key is turned off, then it tests itself after the engine is started, if the fault occurs again the light will come back on.
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I would start by making sure the tire pressure in all the tires are the same and that the tread on the tires have the same amount of tread left. If they are just a little off the Service 4WD light will come on and most of the time that is the problem. Once all 4 tires are equal in pressure and tread wear, it may take a few times of starting, driving around, and shutting the engine off for the light to turn itself off and realize the problem is corrected. Hope this helps but if not, reply and I will keep helping until the problem is fixed.
This means theres a problem with the 4wd, you will need to scan the computer to the trany to see whats going on, may be a soleniod problem or a switch, when ever the computer sees a problem and turns on a service light it stores a code in memory telling you what the problem is, a scan tool is needed to retrive the codes.
First get the codes from the transfer case control module.This will help in diagnosing the problem.You can try pushing the 2hi and 4lo buttons simultaneously for 10 seconds.This should put the transfer case in neutral. Then try going to 2 hi.See if this will get it out of 4wd.Let me know what you find.If you need more help let me know Good luck.
It may be the front axel actuator moter(on front axel right side) is not disengaging the axel. There is a 4wd
fuse 15amp in the fuse block under the dash, make sure it's not blown. If the fuse is ok, check the connections at the actuator and the transfer case switch. These are the more common causes for the
problem you have. Give these tests a try and let me
know if you want to go to the next level.
Hope this helps. Good luck.
sometimes a fuse might be going bad.....thus leading to lights turning on...i wouldnt pay too muc attention to the light unless it comes on more frequently or stays on. if so definitly get it checked out.
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