just bought my 02 disco it had a bad compressor ,changed it out every thing worked fine except realized right rear bag had slow leak when parked .
today got in it to take a 200 mile trip and the pump only gos for 5 sec and shuts off ,,not enough air to lift to correct hight.. all doors are closed car running .. pushed the raise hight button on dash it flashes but pump does not come on...any sugestions

 

Check fuses and try swapping out the relay for a like one to troubleshoot the easy things. Also, depending on how low that bag was the pump could have timed out. Really, first step is to find and fix the leak.

 

Stop pushing the dash button till you find out what it is and when it can be used.
Send me your number and I'll walk you thru what to do.