I have a 2006 Durango that the service 4 wheel drive light keeps coming on. Sometimes it comes on bright and other times very fant or just enough that you can see it. It has a 5.7 Hemi with 220 thousand mile on it. Still runs great and everything is still work just fine. I have changed the rear end grease and the front as well. the fluild in the transfer case has also been changed. Is there something I am missing. Also it is all wheel drive but I can put it in 4hi or 4lo

Tony Taylor