made sure heater core wasn't blocked
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2002 Audi A4 Quattro Question: no heat, fan works but no heat from defroster or vents nothing?
Answer #1csubak30 November 03, 2013, 22:52Master
Possible blend door actuator is not functioning. Need to check to see if blend door is switching over to the heater core side.
Answer #2Greg's Orange Auto (12205 Answers) , Orange, CA - (714) 361-9386globalhelper November 04, 2013, 06:18Master
AGREE WITH #1