Ashtonrodg

Hi All, I recently purchased a used 2013 corolla from a dealership. When i purchased i did not realise the ac lights did not work as it was day. When i've driven the car at night and used headlights the right and left lights are out but the middle is illuminated. Today the middle green light on the A/C dial stopped working but the ac is still functioning. Is this covered by warranty or will i need to fork out for a new knob and lights?