I've done several searches for "4x4 issue" "4x4 warning light", etc. and coming up with nothing on the forum.. I must be searching the wrong keyword as I can't imagine others haven't posted regarding...

The 4x4 light on the dash just came on a couple of weeks ago.. Its gone off a few times but for the most part its on all the time.

Is there anything I can check on my own - common symptoms that cause the 4 wheel drive system to go into error?

THanks much,
Rob