After 3 weeks of being sat on one side, the q7 magically rises itself and now all 4 airbags are filled with air. I have no idea how this happened as i have done nothing other than try to figure out what the problem was. I did keep an eye on it to see if overnight it starts to sag or drop but, all good. I have tried to spray soapy water on the airbags but no leak. I did have the green light on and the yellow light on for the air suspension but now the green light has gone and just the yellow one is on. The code i am getting for that is 01772 which is for the level control pressure sensor which apparently is in the valve block so im considering replacing that and seeing how it goes from there