Question about 2005 Audi A6

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Air Con failure Audi A6

Blower failed. Heater unit seized after a few months of erratic behaviour. New Heater Unit fitted. This is haphazard. Sometimes it works. Sometimes it appears to have completely broken down. Dealer's experts cannot seem to manage to use diagnostic equip. Car under warranty.

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If its a climatronic head unit and there is a fault the head unit sometimes flashes to tell you there is a fault,diagnostic equipment should be able to pin point your problem

Posted on Nov 16, 2008

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Audi a6 quattro 2.8 coolant leak


First of all, are you sure it is a coolant leak and not the natural draining of the Air Con., a leak on piping to or from the washers, condensation from the exhaust etc.?
Does the coolant level drop significantly and if so, how much and over what period?
Can you collect in a tray the liquid that is leaking? What does it look and smell like and what colour is it?
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1 Answer

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The only other thing then would be if the compressor is turning, engaging, and the cooling fan working properly. You should either be able to see the compressor clutch engage, as the switch is energized, or at least hear it click loudly when the switch is energized. If it is not, then there are sensors for the low pressure/high pressure line to tell the compressor when to function, that also have to be checked.

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1 Answer

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1 Answer

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1 Answer

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1 Answer

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