Sorry to hear that. As I mentioned earlier, the FRM only handles lights and windows, so fixing the headlights doesn't automatically fix the climate control.
However, since you are already connected and have the FA loaded, you can try "resetting" the AC module (IHKA) to factory settings just like you did with the lights. If the AC issue is caused by bad coding or a glitch, this will fix it.
Try this:
- Ensure your FA is still Active (Green folder in the top left).
- Look at the SVT list (the ECU list on the right).
- Scroll down and find IHKA (Integrated Automatic Heating/Air Conditioning).
- Right-click on the IHKA folder.
- Select Code.
If it finishes with "0 errors" and the AC still doesn't work, then the problem is not coding-related. It is likely a mechanical issue (low refrigerant, bad compressor, blown fuse) or a sensor fault. You would need diagnostic software like ISTA+ to read the specific error codes for the AC system.