How to maintain the air conditioning system in an Audi 80?

The air conditioning system in my Audi 80 seems to be malfunctioning. What steps can I take to maintain it and ensure it is working efficiently?

First, regularly check the air filter and clean or replace it if needed. This will prevent any dust or debris from clogging the system and causing issues.

Next, make sure to check the refrigerant levels and top it up if necessary. Low refrigerant levels can lead to poor cooling performance.