i believe my hydrolic system is not working properly.the car seems awfully low.i filled the reservoir with hydrolic fluid.what should i do.does the self leveling unit lift the rear end it's self or do i need to drive the car for it to work.

 

before I move your thread cancer, I need to be sure you're speaking about 2004+ XJ series?

There are a bunch of threads in that section dealing with the air suspension, you won't have too far to look.

 

He's probably an XJ40 if he's topping off hydraulic fluid.