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Thread: Bmw E66 ( 2003) 745Li petrol (RH drive) petrol . Leaking liquid from drivers seat

  1. #1
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    E66 745Li

    Question Bmw E66 ( 2003) 745Li petrol (RH drive) petrol . Leaking liquid from drivers seat

    Hi
    I have leaking liquid from what seems a broken blue hose underneath the drivers seat which spills onto carpet under seat forming a white residue when dry.

    My mechanic doesn’t know what is the blue tube connected to .( I have pictures but am unclear as to post. )

    Seat has the full options with aircondrom the seat .

    Would appreciate the help if anyone has any ideas ?
    thanking you in advance .

  2. #2
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    11/88 E32 750iL+98 E36M3
    Moved to E66 forum
    Shogun tricks and tips for the E32 series are HERE!

  3. #3
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    It's for the seat massage function. Or should I say "anti-fatigue" since it's not really a massage. New vehicles use an air bladder system, whereas the older vehicles used the liquid bladders. Figure out what parts are broken and replace as needed.
    ASE and BMW Master Certified Technician

  4. #4
    Join Date
    Jul 2019
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    E66 and F10
    Thank you for that insightful piece of advice that it is the hose connected to the liquid air bladder !
    Do you know of any videos on how to diy repair this broken blue hose and if this repair can be done without taking the chair out ?
    lastly is there a liquid reservoir for this type of air bladder?
    thanjs again and appreciate the time and thought .

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