Suspension compressor burnt out?

[Nilsmogensen]

Hi! I did search the forum for some answers to this but did not find anything matching this.

2003 4.4 E53 sports package. (no adjustable suspension)

I drove the car for like 40 minutes and then parked, noticed a hissing sound and after a few minutes, it was really low. Did not think much about it, previously the car has been slightly lower after sitting for a couple of weeks. I later started the car, pretty sure I heard the compressor come on. After 20 minutes I got the "SELFLEVEL SUSP.INACT" message on the dash. Pulled over and noticed the rear left suspension really sunken down. During the last few days, the rear right suspension also has begun to lower.

I THINK that I have had some slight leakage in the air springs during quite some time. When one of them got a much bigger leak it overworked the compressor which then failed. So new air springs and compressor??

I have checked the fuses in the boot, 79 87. And also 57 in the glovebox. All was fine, (dropped fuse no87 so not sure about that one) All working fuses now. Is there any hope that the compressor can be saved without replacing it? I assume air shocks have to be replaced?

Regards Nils Mogensen