hi, I thought just as much. Yes it's the aux heater and I've put a new glow plug in, reset the vag com, get smoke, hear the jet engine and hear the after run, but the air coming out is colder than your breath(just warmer than the air). The heater exhaust is red hot but the other metal pipe is stone cold would this be a problem or I guess it's based on a matrix and water pump system, so could it be a blockage? Please help I'm freezing :unsure: