Ok I have similar issue on b5 I mighta asked before but no heat when econ button is off. So no heat using defrostrer. What section do u look for heating and ac errors in vag. I just recently got econ heat working using Clr like someone mentioned. Also on my b5 it overheated and possibly busted head gasket or cracked the head. I used a sealer in coolant n that fixed leak. But clogged heatr core.
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