Hi everyone! I am very happy to be back in the Jag family. I previously owned an X308 and a 2005 X350 VP. I loved that 2005!. A week ago I purchased a very nice 2008 X358 VP at an dealer auction. I am going to be bringing her back to her former glory. Mechanically she is great. I am having one issue with the Air ride system that I can't seem to pinpoint. I do have lots of experience with the air ride system as I went through this with my 2005 also. I recently installed a new compressor and that resolved the Plausibility issues. The last issue I can't seem to figure out is that when I monitor the air system while driving on my I930 I am getting a Damper firm error= yes on my reader. And yes the shocks are super firm! I notice when I put the car back into the park the damper firm error changes to no. Back to drive and goes back to yes. I am not sure what is telling the CATS to go into firm mode. I get no DTC's in the system. I do have a check engine light on for a secondary air injection error but I ordered a new map sensor for that as the old one does not change state. Any ideas on this one?

 

Mine was having a huge leak off one of the airbags and then I got the damper mode change into firm. Is your car level?

 

Yes, car is level. Doing a leak test tonight. Parked in the garage all leveled and disconnected the battery so it does not try to auto level. Hoping one corner drops and maybe points to a leaking strut. Not sure what forces it into firm mode

 

Update-2 days with battery disconnected and car is at the same height and still level.