Ccrosser climate control malfunction

I had similar climate issues. It was indeed the interior temperature sensor, most likely a defective cable or plug connection. Check the sensor diagnostics around the HVAC sensor before replacing it. I had that same issue with my Ccrosser. Did you test the wiring?

Thanks for the quick reply! Where exactly should I be checking the wiring? Any specific points that are prone to failure?

Yes, the plug connection on the sensor itself is the place to check. I couldn't resolve it myself and ended up going to the workshop. They confirmed the cable was defective.

Thanks! I suspected as much. Took it to the workshop today, and it was indeed a defective cable connection to the temperature sensor. Cost me 95€ to get it sorted.