Micra K13 controller for temperature first clamped now without resistance and reaction

Hello together, in my Micra K13 the temperature controller stuck for a time and was only allowed to stand cold or warm with a little force. At some point it was broken and can be turned without any resistance, however there is only cold air. All other buttons/controllers work perfectly. Can you remove the controller individually and replace it without having to remove the dashboard? I have attached a picture. VG Julian