keshav Posted September 3, 2011 Report Share Posted September 3, 2011 Is there a general maintenance procedure to maintain the AC of my 2004 330 BMW. Cooling has gone down very drastically so would like to know if there is something i should be doing. Link to comment Share on other sites More sharing options...
bmguy Posted September 4, 2011 Report Share Posted September 4, 2011 There are few things that needs a check @ Change the Filter regularly @Check the AC Gas @Switch off the AC completely before switching off the car. @Don't keep it on constant high speed all the time. Hope this helped Link to comment Share on other sites More sharing options...
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