Hi, I've noticed that the air conditioning is less efficient than it was a year ago. The lowest temperature I could get from the center vent was 8°C (46°F) when the outside temperature was 28°C (72°F). I thought the refrigerant was low, but it turns out it wasn't and it was full. Did the Ibiza have or have an interior humidity sensor? Where should I look for the problem? Best regards.