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Outside air smells with HVAC off/recirc

Discussion in 'Model S' started by rsg123, Apr 6, 2018.

  1. rsg123

    rsg123 Member

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    Jan 1, 2018
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    Location:
    Sacramento
    The weather in NorCal has been mild for the past month or so and I have been able to drive with the HVAC off. In my ICE car, driving with the HVAC off with recirculate mode on causes most outside smells (especially diesel smog) to be kept out. In my late 2014 85, many of these smells/smog enter the cabin quite easily with HVAC off. Is this normal?
     
  2. Gixx1300R

    Gixx1300R Member

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    Location:
    orlando
    When was the last time that you checked your cabin filter?
     
  3. rsg123

    rsg123 Member

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    Location:
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    It was changed during the 50k service which took place just before I bought it about 4 months/6k miles ago.
    Does air travel through the cabin air filter when HVAC is off?
     
  4. Tdriver

    Tdriver Member

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    Jan 20, 2015
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    Location:
    Palm Desert, CA
    Try turning the system on and spray some freshener/deodorant thru the front air intake.
     
  5. murphyS90D

    murphyS90D Member

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    548
    Location:
    Horsham, PA
    If the car was completely sealed up you would use all of the oxygen in the cabin and suffocate. There has to be air flow through the car.
     
  6. rsg123

    rsg123 Member

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    Location:
    Sacramento
    How does this circulation happen with the hvac off—through the cabin air filter and vents?
     
  7. rsg123

    rsg123 Member

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    Jan 1, 2018
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    Location:
    Sacramento
    That would take care of a musty-type smell that’s embedded in the system but where’s the diesel exhaust getting into the cabin with the hvac off?
     

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