Driving home from Ripon last week in my P38 2.5 DT, car going well as it had been for quite a while now and thinking to myself what a great motor she is when all of a sudden I hear a 'pop' and the suspension goes down on to the bump stops the airbag fault and 35 mph message appears on the display, by the time I get home 3 fillings had dropped out! and I felt like I had been kicked in the bollocks. I checked the compressor and it was running but not pumping any air so I got a seal kit off ebay and fitted it, compressor working fine now but still not lifting car off bump stops. I got 4 new airbags and fitted them but car still not lifting up, I have checked all air lines and found no leaks, the orange lights on the EAS switch are all on so my question is what to do next, could it be a pressure valve or a solenoid in the valve block not working or is there a procedure to follow to activate the ride height sensors, any suggestions would be much appreciated.