Hi SiggenRRC and thanks for the quick response.
I get the error message "Air suspension fault, normal height only". The compressor also makes a lot of noise.
The diagnostics tool from the local garage is quit clear that it is the compressor that causes the problem.
Im considering buying a compressor from ebay (link below) Do you have any advises regarding this?
https://www.ebay.com/itm/For-Land-Rover-Discovery-3-Hitachi-Type-Air-Suspension-Compressor-Pump-LR023964-/254182398586?fits=Make%3ALand+Rover#vi-ilComp
Again; Thanks for your reply.