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2004 Cayenne 955, 4 zone climate - only blows cold air (no heat)

William skagen · 2020-10-23T13:13:55+0000

Hi there! My dads newly acquired 04 Cayenne S is suffering from overcomplicated German engineering. The 4 zone climate keeps blowing cold air no matter how much we fiddle with temp controls, auto/mono settings etc. I have not plugged it into a diagnostic system yet, but I do know the drivers vents (all three) seems stuck to a maximum of 20% airflow while the other zones can regulate fan speed as intended. Is there anything you guys could point too that would be worth a check? Or should i just focus on getting it diagnosed first 🤷♂️ I went through the wiring under the driver/passenger footwells and it was in great condition, barely any oxidation. Please help before winter comes!!!! 😛