Hi guys... yes i know that this thread is now old but i am having the same issues.


After fitting new rear suspension air bags I found that the air pump does not work by itself to inflate the suspension as it should do to retain the correct height.


I am using INPA to set the correct height at 721mm.


Using INPA I can inflate the rear suspension air bags and if i drive in town they stay raised. Or after a week or so there will be a slight fall in height. Driving on the motorway causes the suspension to drop faster and I get the Inactive air suspension error etc.


Now, i have checked for leaks etc and using INPA i can communicate with the EHC and there are no errors there etc.


So, i think my issue is that the values I am inputting may not be correct or i am doing something wrong.



Any further assistance much appreciated.


Thank you