Why does my Audi A6's air conditioning blow out warm air?

I've noticed lately that my Audi A6's air conditioning is not working properly. It only blows out warm air instead of cold. Has anyone experienced this issue and found a solution for it?

Your Audi A6's air conditioning system may not be working properly due to a refrigerant leak. It's best to get it checked and fixed by a certified mechanic as soon as possible.

You may need to get your car's air conditioning system recharged. This service should be done every few years to keep it running efficiently. Make sure to take it to a trusted mechanic.