Fluid is good.

This forum (and SL site) has been a WEALTH of info.

The back end is controlled by Hydro fluid-but the front shocks each have a little accuator controlled by a computer. Computer allow the amount of air/oil to adjust ride. As both went down odds are:
-computer is bad,
-wire harness is bad from computer to shock accuator
-sensors feeding data to computers are bad/broken/misaligned