How do I change the economy switch on my Audi A6 Quattro

If this has been going on for 2 years it's time to bring it in for an inspection. Either the ac is low, not building pressure or there is an electrical issue and we won't be able to diagnose it online. If you don't work on your own car then use this link to find a good shop near you. https://repairpal.com/repair-shops Alex