Fan blower continues to run after engine shutdown
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    1. #1
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      Fan blower continues to run after engine shutdown

      Just took delivery of 2011 XC-90 yesterday. Made a short trip today and returned the car to my garage but noted fan motor/blower continued to run even 60 minutues after engine shutdown. I kept hoping the fan would shut off but to no avail. After I re-inserted the ignition key and turned to position III the fan blower immediately shut down. I then decided to secure the auto-mode and turned the fan speed knob to fully off; also pressed the a/c button to off. I plan to monitor for the next few hours in hopes the fan does not start up again. If it does, I guess my next action will be to disconnect the battery before re-connecting to make a trip to the dealership. Suggestions are invited.
      2006 V50 w/Sport Pkg Black

    2. #2
      Junior Member Excimer's Avatar
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      Are you referring to the fan in the front near the radiator or the inner fan blower for the cabin? My inner fan blower tries to cool the inside sporadically. It does this when I walk by with the key in my pocket. When I walk by without the key it does not. The outer fan for the radiator shuts itself off after 10 to 12 minutes when it is very hot (102 outside). Some mornings when go to start the car and it is above 80 degrees outside the fan in the car is running blowing air into the cabin. Can always starts right up. If it is very cold out and the motor was run a couple of hours before and I get back in to go somewhere it is blowing marginally warm air in. Has done this since new (January, 2010).

    3. #3
      ... the a/c fan runs after the engine is shut off to prevent mold and bad smells in the HVAC system. but if it runs constantly u need to talk to ur dealer
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    4. #4
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      I am aware of the normal after-run function of the electric fan for the engine's radiator. It is the inner fan blower for the cabin that is my concern. WRT the inner fan blower for the cabin, I suppose running for awhile after shut down to prevent mold makes sense. I'll monitor closely to ensure the fan eventually stops.
      Perhaps I'll be able to ascertain (from Volvo) the normal after-shutdown function for this fan. I noted quite a few weird functions for the cabin fan blower in the "R'" Forum so I suppose this is not a new problem. I say "problem" because if it's a normal function, Volvo should include relative info in the Owners manual.
      2006 V50 w/Sport Pkg Black

    5. #5
      Global Moderator GrecianVolvo's Avatar
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      Quote Originally Posted by eagle2x View Post
      I am aware of the normal after-run function of the electric fan for the engine's radiator. It is the inner fan blower for the cabin that is my concern. WRT the inner fan blower for the cabin, I suppose running for awhile after shut down to prevent mold makes sense. I'll monitor closely to ensure the fan eventually stops.
      Perhaps I'll be able to ascertain (from Volvo) the normal after-shutdown function for this fan. I noted quite a few weird functions for the cabin fan blower in the "R'" Forum so I suppose this is not a new problem. I say "problem" because if it's a normal function, Volvo should include relative info in the Owners manual.
      Yes, the cabon blower will run as art of the normal afterblower function of the auto climate system.
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    6. #6
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      Quote Originally Posted by GrecianVolvo View Post
      Yes, the cabon blower will run as art of the normal afterblower function of the auto climate system.
      Thanks for the clarification. It's a real benefit to have the input of a knowledgeable Volvo Global Moderator. Hope Volvo appreciates you.
      2006 V50 w/Sport Pkg Black

    7. #7
      Member gascos80's Avatar
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      Quote Originally Posted by eagle2x View Post
      Thanks for the clarification. It's a real benefit to have the input of a knowledgeable Volvo Global Moderator. Hope Volvo appreciates you.
      Yannis (Grecian) is The Volvo...and we all hope (sure) that it does appreciate him...

      The inner fan after blow has the mind of its own, as I am pretty sure, it is also triggered by the extreme hot temperature in a cabin. I found the fan running in my car parked under the sun on many occasions.
      Last edited by gascos80; 09-03-2010 at 04:20 PM.

    8. #8
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      Quote Originally Posted by gascos80 View Post
      Yannis (Grecian) is The Volvo...and we all hope (sure) that it does appreciate him...

      The inner fan after blow has the mind of its own, as I am pretty sure, it is also triggered by the extreme hot temperature in a cabin. I found the fan running in my car parked under the sun on many occasions.
      Good information about this exteme hot temp feature. Glad I don't live near death valley or other desert areas, otherwise my XC-90's fan motor would wear out before the car ages out. Can't imagine how many battery replacements would occur.
      2006 V50 w/Sport Pkg Black

    9. #9
      Member gascos80's Avatar
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      Quote Originally Posted by eagle2x View Post
      Good information about this exteme hot temp feature. Glad I don't live near death valley or other desert areas, otherwise my XC-90's fan motor would wear out before the car ages out. Can't imagine how many battery replacements would occur.
      Do not worry about the battery drain. Your Volvo watches the battery and will shut the fan (either the raditor cooling or internal) if battery voltage is low. Same applies to the radio I think. I live in So Cal and have P2 cars since 2000. Never had an issue with either fan draining the battery.

      Although the parking lights did drain the battery of my XC90 once.

    10. #10
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      Lightbulb

      I submit an apology to Volvo regarding this issue. Page 93 of the 2011 XC-90 Owners Manual explains the functions of the passenger compartment blower and the automatic blower start up after engine shut down. "When all else fails, read the instructions!!":
      2006 V50 w/Sport Pkg Black

    11. #11
      Member gascos80's Avatar
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      Quote Originally Posted by eagle2x View Post
      I submit an apology to Volvo regarding this issue. Page 93 of the 2011 XC-90 Owners Manual explains the functions of the passenger compartment blower and the automatic blower start up after engine shut down. "When all else fails, read the instructions!!":
      As an old joke says - real man reads the instruction only when he is absolutely sure that the thing that he want to put together is broken beyond repair...

    12. #12
      Junior Member cdauerer's Avatar
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      Quote Originally Posted by gascos80 View Post
      Yannis (Grecian) is The Volvo...and we all hope (sure) that it does appreciate him...
      He is appreciated. He bleeds Volvo blue and always strives to take care of our customers.
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    13. #13
      Quote Originally Posted by GrecianVolvo View Post
      Yes, the cabon blower will run as art of the normal afterblower function of the auto climate system.
      My 06 xc90 does not do this, but my 07 does. I am not in a hot climate here in Wisconsin, but this summer the interior fan would be running frequently, and now battery was dying this weekend. I always turn off the ac a mile or so from home hand turn fan on high, then once in the garage, turn off the "auto" setting and fan off, but that still doesn't defeat it. I read the manual, but don't see how I can defeat it. Perhaps one cannot defeat that feature? Any ideas/help much appreciated.

    14. #14
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      Quote Originally Posted by TurboSwedes View Post
      My 06 xc90 does not do this, but my 07 does. I am not in a hot climate here in Wisconsin, but this summer the interior fan would be running frequently, and now battery was dying this weekend. I always turn off the ac a mile or so from home hand turn fan on high, then once in the garage, turn off the "auto" setting and fan off, but that still doesn't defeat it. I read the manual, but don't see how I can defeat it. Perhaps one cannot defeat that feature? Any ideas/help much appreciated.
      I don't know about the Volvo blower resistor, but in the BMW, the FSR (Final Stage Resistor) that controls the blower speed can go nuts, shorting the circuit and runs the blower fan non-stop, even with the key out of the ignition, creating dead battery.

      So, look into the blower resistor. Now, if this is truly a bad resistor, then use only Volvo Genuine part because aftermarket stuff is unpredictable.
      About $115...

      http://www.jimellisvolvoparts.com/p/...5/8693262.html

    15. #15
      Quote Originally Posted by cn90 View Post
      I don't know about the Volvo blower resistor, but in the BMW, the FSR (Final Stage Resistor) that controls the blower speed can go nuts, shorting the circuit and runs the blower fan non-stop, even with the key out of the ignition, creating dead battery.

      So, look into the blower resistor. Now, if this is truly a bad resistor, then use only Volvo Genuine part because aftermarket stuff is unpredictable.
      About $115...

      http://www.jimellisvolvoparts.com/p/...5/8693262.html

      Cn90, thanks for the advice I will check in to it.

    16. #16
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      You may want to read this thread below:

      http://www.volvoforums.org.uk/showthread.php?t=76031

    17. #17
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      Very common problem on XC90, blower resistor failure. Which causes battery to drain down.
      Dealer will want 8 hours labor to replace blower resistor. You can replace resistor without removing dash in hour. Just break off fan mounting tab you cannot access without removing dash.
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