My 2004 A8 was jacked up to repair a flat (jacking mode was not set) and shortly after the warning indicator light came on and has atayed on. The car suspension is high in the air and has a very stiff ride. The height adjustment control does not work now.
Not being Audi savvy, I can offer only a recommendation to schedule an appointment with your Audi service provider straightaway. The fault may require Audi specific scanning equipment to verify and correct this issue. Not knowing the specifics, a phone call to said provider might be the best way to start, they know things that I do not and the solution may be quite simple.