We have a 2013 seat Leon which has little or no heat in the vehicle. The engine warms up normally and there appears to be heat on both sides of the heater matrix hoses.There are no codes stored in any systems I.can also see the motors operating the heater box flaps. The live data for the climate system also appears to display the correct information with regards to output temperature. The outside temp also is reading the correct temp. Are there any known concerns or common issues with this climate system?