Hello, I have a 2009 MG GL550 and my compressor was leaking air so I bought a replacement one. After installing the new one I noticed the active dampening and suspension riser buttons no longer were working. I had installed the new relay and changed the 40amp fuse as well. I even plugged in the old compressor and still no juice. I checked all of the other fuses in the same bank and none were faulty. Is there more than one fuse or relay that runs this system. Does the car have to be back on the ground for it to re-set. I checked the codes with my scanner and none were showing. Thanks for your help.

There is an additional relay located by the rear Sam unit

Thanks I found 2 additional fuses in the rear compartment area and one of those were blown. I have attached a fuse diagram for anyone who might need to reference it themselves.