I've recently bought a 2006 A4 S-Line 2ltr TDI. Lovely car but have found what might be a slight issue with the heater / aircon. Hopefully someone will be able to tell me if it's normal!
I have the ECON on and the AUTO off. I have the air blowers set to 2 bars. This is fine, however, when I knock the air blower speed up to 3 bars, the AUTO lights (on both sides) come on! This only seems to happen when the air blower speed is on 3 bars. If I knock it up to 4 bars and above, the AUTO lights stay off, as I believe they should. Is this normal, it's driving me nuts!