# 2002 Volvo S60T Heater stops working

**URL:** <https://community.cartalk.com/t/2002-volvo-s60t-heater-stops-working/9117>\
**Category:** Maintenance/Repairs\
**Tags:** heating, volvo\
**Created:** [January 7, 2008, 7:47pm UTC](https://community.cartalk.com/t/2002-volvo-s60t-heater-stops-working/9117 "2008-01-07T19:47:50Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![PeggyGlenn](https://avatars.discourse-cdn.com/v4/letter/p/b5ac83/32.png) [@PeggyGlenn](https://community.cartalk.com/u/PeggyGlenn)\
**Post date:** [January 7, 2008, 7:47pm UTC](https://community.cartalk.com/t/2002-volvo-s60t-heater-stops-working/9117/1 "2008-01-07T19:47:50Z")

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When I turn the car on I have heat for about 12 minutes, then it starts blowing cool/cold air. The AC is off. The only way I get heat is if I turn the temp control to the red zone. After I get too hot & turn to even 80 degrees, it starts blowing cold air again.  
  
 The dealer reset the heater computer & that did nothing. They are saying I need a new heater. Help! This is my 5th Volvo & we run them to at least 250,000 miles & have never had to replace a heater.  
  
 I live in Knoxville, so it is not like I have to run the heater nonstop.  
  
 Thank you!

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [January 7, 2008, 8:43pm UTC](https://community.cartalk.com/t/2002-volvo-s60t-heater-stops-working/9117/2 "2008-01-07T20:43:17Z")

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I am not totally convinced it it the heater’s computer control, but it could be. Those fancy controls have a habit of going crazy. I suspect they will bet more reliable in time, but I would avoid them if I could.

You might have the car’s cooling system checked (look for air in the system) as well as the vacuum system.

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**Author:** ![PeggyGlenn](https://avatars.discourse-cdn.com/v4/letter/p/b5ac83/32.png) [@PeggyGlenn](https://community.cartalk.com/u/PeggyGlenn)\
**Post date:** [January 11, 2008, 2:42am UTC](https://community.cartalk.com/t/2002-volvo-s60t-heater-stops-working/9117/3 "2008-01-11T02:42:11Z")

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Thanks for your reply! Does it make a difference that everything works fine if the outside temp is 65 or above? 55 & below I difinitely have the problem. The inside temp stays at 69 when it is 44 or 55 outside. I have all outside vents turned off.  
Thanks!

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**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\
**Post date:** [January 11, 2008, 9:18am UTC](https://community.cartalk.com/t/2002-volvo-s60t-heater-stops-working/9117/4 "2008-01-11T09:18:16Z")

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If your system uses an infrared sensor to detect the air temp there may be a problem with it. I am not familiar with your system so I don’t know for sure.

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**Author:** ![PeggyGlenn](https://avatars.discourse-cdn.com/v4/letter/p/b5ac83/32.png) [@PeggyGlenn](https://community.cartalk.com/u/PeggyGlenn)\
**Post date:** [January 19, 2008, 9:18pm UTC](https://community.cartalk.com/t/2002-volvo-s60t-heater-stops-working/9117/5 "2008-01-19T21:18:57Z")

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Thanks! It turns out that inside ambient sensor needed to be replaced. I now have heat!