Druff

Hi all. So im new to this forum, apologies if ive not posted this in the correct place. I have an AUDI Q7 S LINE TDI QUATTRO A 2008, and have been having intermittent issues with my adaptive air suspension. Initially, the AAS would not respond for a day or so, but then work after a few days. However for around 2 weeks now it wont respond at all. Ive attached the complete VAG VCDS report. If anyone can help me make sense of it i would be hugely grateful, or if not direct me to a place that can.
Thanks in advance
Druff

Edd W

Now you have those faults saved, I would clear the whole lot and see what recurs.
Have you been playing with various things or are all these faults just occurring?

It looks like there are a few 'real' faults and the rest are just related to a low battery or similar?

Druff

Hi Edd, I've not been playing with anything no. After searching for similar issues online, i thought the best thing was to get hold of a VCDS report and post it to here. As far as i am concerned the only issue ive been having is the AAS. Although the report looks otherwise. I'll clear the faults and run a new report and post the results. Thanks for your time.
Druff

Edd W

In my experience, most air suspension faults seem to be simply related to the level sensors so if you clear all the faults then see how the car behaves and post any new faults and we'll have a look.

Druff

Hi Edd, so I've run 2 new reports this morning. A new test, then cleared DTCs, and performed another test. I've attached both for comparison. Would you recommend running another test in say 1 week to see what codes reappear? Thanks again for your time.
Druff

Druff

I should have also said there has been no change in the suspension. It won't change from dynamic.
Cheers

Edd W

It looks to me like your compressor may have failed or you do genuinely have an air leak or both, compressor fault due to the leak causing it to run for too long.

I would test the compressor - it's not too bad to remove and power directly from a battery and it should run smoothly with a good air flow. If it rattles around it may just need a new piston ring kit which you can buy on Ebay.

Does the car droop if left for any time at any corner or front to rear. If it does, try leaving it parked in jacking mode - this should close the valve to all corners and should rule out the pressure reservoirs.

Druff

Is it the compressor next to the spare tyre? I believe there is one in the engine compartment too isn't there?

Gavin0478

The compressor is under the car behind the right side front wheel.

Druff

Thanks Gavin