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Thread: Help! Look what just happened?

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  1. Help! Look what just happened? 
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    IMG_3598.jpgIMG_3597.jpg

    Just drove home saw steam coming out of bonnet, removed cover to find this? Looks to me like an air com pressure switch has exploded? why why? do there switches fail or does it mean other issues with air con for this to explode like this and eject loads of this green stuff out of the system??
    Thanks
    Audi A4 3.0TDI Q SE Lava Grey + B&O, Audi Drive Select, Sports Seats, Sun Roof, DVD Sat Nav Plus, Blue Tooth Phone Prep, Audi Hill Assist, Rear Parking Aid, Electric Seats, Light Pack, Audi Audio Interface, MMI etc... and 4 Halfords Bulbs lol....
     
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  2. Re: Help! Look what just happened? 
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    Very common failure and it has blown most of the systems oil out so will need to be reset by someone who knows what they are doing, not just any old recharge place.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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  3. Re: Help! Look what just happened? 
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    Yes I gathered that the green stuff looked like a type of oil? Just wanted to make sure it wasn't caused by another fault in the system like it being over pressurized or something? I have ordered a replacement pressure switch, not cheap! from audi and got it booked into a local garage to have it recharged? Thanks for mentioning about putting the oil back in :-) Don't these automatic AC systems suck everything out and refill with the correct ratio of oil and refrigerant? I thought that's these systems work?
    Audi A4 3.0TDI Q SE Lava Grey + B&O, Audi Drive Select, Sports Seats, Sun Roof, DVD Sat Nav Plus, Blue Tooth Phone Prep, Audi Hill Assist, Rear Parking Aid, Electric Seats, Light Pack, Audi Audio Interface, MMI etc... and 4 Halfords Bulbs lol....
     
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  4. Re: Help! Look what just happened? 
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    It is called PAG oil which means Polyalkylene Glycol. Some systems do that, not all, we take ours to an AC specilsist.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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  5. Re: Help! Look what just happened? 
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    Thanks, does this switch just screw in? does it need any form of gasket replacing when I install the new one? or is it just like an oil pressure switch and you just screw it in and tighten? and how does the electrical clip come off? do I have to lift up something or press something to get the electrical plug connector off?
    Audi A4 3.0TDI Q SE Lava Grey + B&O, Audi Drive Select, Sports Seats, Sun Roof, DVD Sat Nav Plus, Blue Tooth Phone Prep, Audi Hill Assist, Rear Parking Aid, Electric Seats, Light Pack, Audi Audio Interface, MMI etc... and 4 Halfords Bulbs lol....
     
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  6. Re: Help! Look what just happened? 
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    All sorted, purchased a new pressure switch/sensor fitted it myself and then took to garage where they vacuumed the system checked for leaks added PAG oil and re-gassed system and now nice cold air once more a result!
    Audi A4 3.0TDI Q SE Lava Grey + B&O, Audi Drive Select, Sports Seats, Sun Roof, DVD Sat Nav Plus, Blue Tooth Phone Prep, Audi Hill Assist, Rear Parking Aid, Electric Seats, Light Pack, Audi Audio Interface, MMI etc... and 4 Halfords Bulbs lol....
     
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  7. Re: Help! Look what just happened? 
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    And today, we need the chill!
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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