Hi, I'm a newbie to the forum and recently purchased a 2004 B6 S4. When i bought the car, the weather was a little chilly and therefore I didn't get round to testing the climate control fully. It seems to work fine when I need to warm the cabin on chilly mornings but now the weather has finally decided to warm up a touch I thought I'd try it to on the LO setting. The first time I tried it, it seemed to work fine and there was plenty of cold air blowing into the cabin. However I have noticed that it doesn't always seem to work. Yesterday I turned it to LO and there was still warm air pumping out of the vents. It would appear that its intermittent as to when it wants to work properly!! Has anyone else experienced a similar problem?? I'm hoping a simple re-gas may sort this!! Thanks in advance!!