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

2005 SAAB 9-5
200,000 MILES • AWD • AUTOMATIC
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KATELJ
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  • 2 POSTS
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.
Dec 10, 2016 at 10:52 AM
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HMAC300
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 48,601 POSTS
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.
Dec 10, 2016 at 1:39 PM
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KATELJ
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Thanks so much for your response. I will try on Monday and let you know how it goes!
Dec 10, 2016 at 3:24 PM