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  1. #1
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    Member No: 7754 rogbmw is an unknown quantity at this point rogbmw's Avatar
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    What's This?

    Saw this on a car the other day. My CSi does not have it. It is on the driver's side of the radiator with a plug on it. Anyone know what it is?

    94 850CSi


  2. #2
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    Member No: 111416 Walte is an unknown quantity at this point Walte's Avatar
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    Re: What's This?

    it is an air quality sensor.
    It tests the outside air. if the air quality is bad enough to trip the sensor , the cabin air is recirculated instead of drawing in air from the outside. 007ish eh 8^)
    Walt

  3. #3
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    Member No: 55687 newmexicomatt is an unknown quantity at this point newmexicomatt's Avatar
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    had that on my Euro model

    it is for automatic air circulation...if it senses bad air then it flips a switch which makes the cabin air recirulate...as far as I know, it was only on euro models or those made after 1995 (IIRC)Matt
    '94 850CSi #37 Individual tobago blue
    '01 750il Midnight Blue Highline Edition
    '03 Z4 3.0ia Sterling Silver/Dream Red
    '08 X5 4.8i Space Grey/Tobacco
    '56 Continental Mark II
    '59 BMW Isetta 300

  4. #4
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    Member No: 117915 Merlin4SC is an unknown quantity at this point Merlin4SC's Avatar
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    Re: What's This?

    AKA = Auto Recirc

    retrofits described in archives here

    RM




  5. #5
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    Member No: 167182 TxGR8White is an unknown quantity at this point TxGR8White's Avatar
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    a.k.a. : AUC


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