Suspension not rising

Have you checked the height sensor ?

Check the air lines for leaks especially around the right rear tire area. chances are the flat tire severed or pulled loose one of the lines from compressor

if your in doubt about the functionality of the suspension system a quick way to check and see if the static pressure system is working properly is totake a floor jack and raise up the opposing side that you have questions..The system stores 228ps in the retantion tank located under the spare tire.As you force the air to one side the recycle valve will release the air to lower the cars' body.You wil hear it come out,then lower the jack,then the air from the tank will refill the lost air....Turn on the car to initiate the air pump to refill the rear tank,you should feel the car raise up in the front evenly.Last but not least my suggestion is if you think another shock is leaking you can 1st check the caping on the shocks...at times they will leak slowly on the caping...it will start as a weeping leak and you cant hear it....you can get some soapy water and lightly spray it around the enter deck mounts location under the hood where the air lines feed into the shocks...if you see air bubbles,then you can easily pack a towel in the leakage until you find a used shock or rebuilt one off ebay....But you fault light wont display a mil.The fault light only comes on when pressure is lost from the shock,or a static line has failed...causing one shock to lower to be lower..The CAN will trigure a fault code as the sensor detects body uneveness..Usually when this happens you will see a fault code,but I doubt this is your issue.

Seek R/R tech for diagnostics. Expensive repair on any R/R.

System is multifunctional and needs someone with working knowledge to not cost you above what's needed.

Here's a resource for a shop that MAY help or direct you to one who can :

http://www.iatn.net/shopfinder/

you mean air suspension. yes, there is a switch in the trunk i think on left side. turn it off , then open hood and on the air pump for suspension there is a regular air valve like on tires. Release the air from system, car will lower down.. then turn switch in trunk back on and start engine so the pump wont kill battery , and watch the car rise again to normal height.

Most of the time on those units its the level sensor located on the back of the suspension system. Its a black sensor mounted to the top of the suspension with a lever that is conected to the bottom of the suspension. As the vehicle sinks the sensor tells the compressor to come on and fill up the airbags. 9 times out of ten that is the problem. you can get under the car with a flashlight and see it

try finding an air leak, did yo hit something in the road? also look for the leveling valve to see if it's leaking if it is then replace it and you can fix it just don't jack it up without the compressor unpluged.

it sounds like the vent solenoid in the pump is sticking try tapping on the pump assy under the air cleaner box see if it vents

listen for air leaking from the bag or the air supply line

I have a 2001 Allroad that had the suspension pump that continued to run, become quite loud and then it failed to keep the car at level one. This all started while under warranty but it finally failed outside of warranty and we all know that Audi denied any coverage but they offered to do the work for $1500 for a new pump and installation. I am quite handy and looked into this pump and any type of replacement parts and I found a way to replace the pump for about $350 new if you have a bit of time and are a little handy. The pumps are not made by Audi, nor Continental as the label on the pump states. They are made by a company that makes the same pumps for Range Rover, BMW, Audi and Mercedes as well as others. The pumps are the same except for the exterior mounting plates and air hookups and wire plugs. These are minor. You can find the pump for a Mercedes for $300 on eBay or approx $425 in the internet. The mounting plates on either end of the pump are swapped out in about 30min (2 strange screws on one end, drilling out 4 small rivets on the other and replacing with 4 small screw/washer/nuts). The air hose inlet/overflow and output may be different depending on the model but metric nylon quick connect fittings are available at McMaster for about $3-$8 depending on how many you need. You also may need to swap out the Audi Wire plug connector, wire crimps and heat shrink tubing. I found out a good deal about these pumps and their specs. The pumps are all similar except for their brackets and connectors to your vechile. Oh, you also have to screw in your temp sensor to the new pump and plug it in. I spent a week learning about these pumps and taking it apart. I would be happy to answer any questions you may have.