New to the board, though not to AUdi. Issue, recent cold snap, heating issues. Symptom: With all temp gauges at proper levels (coolant mid dial, Oil temp 1/4 + from the left) my Climate control is blowing warm to cool. No residue inside car (from coolant contamination), no smells, just not much heat (even when set on "HI"). My thought was (god forbid) heater core . . . but no smell, no residue. Then, control head . . . but all controls on the panel (save the actual temp delivered) are acting normally. Is there a self test sequence for the system?
Any suggestions? 03' Allroad, 2.7T-M, K04's, MTM ECU remap, otherwise bog standard