Originally Posted by mln01

I think there is still confusion here about just which indicator lamp is illuminated.

The OP says "it is the green light n the upper L hand corner of the dash." The indicators in the upper LH corner are Service Engine Soon, Hill Descent Control, Brake, Diff Lock, T-case Neutral and Traction Control.

The only one of those that's green is Hill Descent Control, and if the HDC button is pressed when the T-case is not in Low the light will flash and a warning will chime continuously.

Try pressing the HDC switch and read p.49 of the owners manual.