Q7 Air Suspension Fault

[Kirsty Laroche]

PLEASE HELP!!!

About a month ago I took my car into Audio with the air suspension light on on the dash.  It doesn't come on straight away all the time and it comes on more in Dynamic Mode than Comfort Mode.  They ran a diagnostics and told me it was fine.  I picked it up, got two minutes down the road and it came back on so I went straight back.  They took it back in the workshop and told me it was the compressor and valve block.  We had these both changed with an independent Audi specialist as Audi dealership told me they couldn't get the part for three weeks and the car is traded in. These have both been changed and the fault is still there, the car has now gone back to Audi.  They said the fault on the compressor had gone but the fault on the valve block was still there, we changed the valve and now the fault is back on the compressor, which before was fine, I don't understand.  The car drives fine and has not dropped or sagged, if it wasn't for the light, you wouldn't know there is anything wrong with it but I have spent a lot of money and no one can fix the car, not even Audi.