A week ago I had all these come on at once. The transfer case switch would not function to change from 2WD to 4WD. I took it to my dealer, who diagnosed a broken wheel sensor connector. Now repaired, all warning lights are gone. I did find one interesting phenomenon. Assuming the Liberty was in 2wd, if I set the transfer case switch to 4wd BEFORE starting the engine, the 4WD "engaged" display would show, and 4WD traction would operate. If I shut off the engine and reset the switch to 2WD, then started it again, the 4WD display would extinguish, and 2WD traction would operate. I mention this in case someone else suffers a switch failure-it seems you can still operate the transfer case this way. Who-da-thunk-it?
2008 Jeep Liberty North Edition 3.7