2002 Mercedes Benz S320

Tiny
RON HARRIS
  • MEMBER
  • 2002 MERCEDES BENZ S320
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
My heater is blowing cold air. It seems to be workinf ok except the warm air is not getting to the passenger cabin
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Wednesday, December 3rd, 2008 AT 2:33 PM

1 Reply

Tiny
GFIMOTORCARS
  • CERTIFIED MECHANIC
  • 673 POSTS
This is often caused by a failed heater exchange valve. The exchange valve allows for coolant passange into the heater case, and when it fails results in cold air coming through the heat settings.
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Friday, February 20th, 2009 AT 1:11 AM

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