The heater does not work in car during winter below forty degrees

Tiny
KATELJ
  • MEMBER
  • 2005 SAAB 9-5
  • AWD
  • AUTOMATIC
  • 200,000 MILES
The heater in my car will only blow out heat during the warm months. As soon as it gets below roughly forty degrees it stops producing any heat. It does not blow out cold air, it just does not do anything. We get really cold, snowy winters so driving without heat is not really an option. It is an old car that otherwise runs well.
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Saturday, December 10th, 2016 AT 10:52 AM

2 Replies

Tiny
HMAC300
  • EXPERT
Try pulling HVAC fuse inside car for sixty seconds with key on it may reset actuators and heat may work otherwise the blend door actuator is no good or not getting power this is assuming hoses are hot. If auto temperature control it must be scanned by a mechanic to see what is wrong.
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Saturday, December 10th, 2016 AT 1:39 PM
Tiny
KATELJ
  • MEMBER
Thanks so much for your response. I will try on Monday and let you know how it goes!
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Saturday, December 10th, 2016 AT 3:24 PM

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