1998 Mercedes Benz S320 Heater Does Work Only Blows Cold Air Ac Possible

1998 MERCEDES BENZ S320
159,000 MILES
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Heater does not work only blows cold air from ac.What are the possible problems?
Dec 16, 2012 at 2:18 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Defective thermostat, heater core clogged-up, heater control valve and air blend door stuck in the cold position
Dec 16, 2012 at 2:46 AM
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