How do I replace the thermostat in my Audi 80?

I've noticed that my Audi 80 is not heating up properly and I suspect the thermostat may be faulty. How can I replace it myself?

First, make sure you have the correct replacement thermostat for your specific Audi 80 model. Then, locate the thermostat housing near the engine block and remove it carefully. Replace the old thermostat with the new one and make sure it is properly sealed before reattaching the housing.

Before attempting to replace the thermostat, it's important to let the engine cool down completely. This will prevent any burns or injuries. Also, make sure you have all the necessary tools for the job before starting.