2005 Hyundai Sonata Heater Problem

hyundai
sonata

#1

Our 2005 Sonata GLS with 100,000 miles has a digitally controlled system for the heater & A/C. For more than 2 years the only way to get heat was to raise the temperature up into the 85 - 90 degree range. Now we must put it all the way up to 90. When we do, the heat is extreme.


#2

When was the last time you had the cooling system flushed and bled?

BC.