Bernie 33 Posted March 1 Share Posted March 1 My old A3’s hot heating isn’t working even though the cold AC seems to be working overtime!! On top of that I keep losing water in the expansion tank over 100 or so miles to just below the sensors!! Any thoughts? Quote Link to comment Share on other sites More sharing options...
cliffcoggin Posted March 2 Share Posted March 2 Add an air lock to the list of possibilities. Has the cooling system been opened recently, to fit a thermostat for example or change a hose? 1 Quote Link to comment Share on other sites More sharing options...
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