Hi there, I recently got myself a w reg 3.0 mv6 estate which im very pleased with but the heaters wont blow hot!. I bent myself upside down into the drivers side footwell, found the matrix and both pipes are very hot. I also twidled the temp nob on the dash and saw movement on the bits that direct airflow so I'm puzzled as to whats wrong. I had a quick scan through some of the posts here and noticed reference to a hbv? is that a heater bypass valve? if so where is it? Any help would be great

HI thanks for that link, unfortunately the motor the guy is talking about is working as it should and is opening and closing the flap/vent unless its broken inside.