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Front windscreen misting up

Discussion in 'Model S: Interior & Exterior' started by Asciidv, Feb 23, 2016.

  1. Asciidv

    Asciidv Member

    Joined:
    Feb 4, 2016
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    34
    Location:
    Ponteland, Northumberland, England
    Here in the UK it is about 35 degrees F. As soon as I put the heater on the front windscreen mists up. it means that I have to pull over and wait until it clears which takes a couple of minutes. This is a regular occurence. It appears that the heater is pulling through air with a high water content. I took my car to a jet wash a couple of days after I received it ( It is now week 3 ), could I have soaked anything which is causing this problem, or do all Tesla S's behave in this way?
     
  2. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    Location:
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    The Tesla likes to use recirc, which is bad for condensation. Manually switch the system to fresh air and it should be a lot better. You might want to try different vent settings as well. Also, the defogger button has two settings, push twice (turns red) for max defog.
     
  3. GaryREM

    GaryREM Member

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    Location:
    Fairfax, VA
    Have you tried pre-heating using phone app?
     
  4. Patrick W

    Patrick W Member

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    Location:
    SLC, UT
    Same problem in my car.

    In addition to what Jerry suggested I find it helpful to open one of the front windows a few mm until the fogging dissipates.
     
  5. SwisSojourners

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    Dec 3, 2014
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    Location:
    Vancouver, WA
  6. Patrick W

    Patrick W Member

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    Location:
    SLC, UT
    Interesting. I never thought of AC.
     
  7. grichard

    grichard Member De-Luxe

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    Oct 2, 2015
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    Location:
    St. Louis, MO
    +1 for that. It switches over to recirc *very* readily at cool temperatures, presumably to make cabin heating more efficient. I have to manually switch it to non-recirc on my morning commute whenever it's below about 25F.

    Pre-heating in my garage puts off the moment of reckoning by a few miles, but eventually the fog catches up unless I turn recirc off.
     

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