FiveHundred Defrost Air Distribution Fault

Interesting issue. Sounds vaguely familiar. Could this be related to the HVAC unit? I had a similar problem with my old Opel Corsa, where the air distribution was completely off, but that was a different issue. How difficult is it to access the distribution flap in the FiveHundred?

Accessing it requires pulling part of the dashboard panel, so it's more than just a quick peek. You mention a similar problem with your Corsa's air distribution. Was yours also throwing an error code, or was it purely a functional issue?

Ah, dashboard removal, sounds like a proper job. In my case, there was no error code, only the function was impaired. I took it to a workshop. They said the climate control unit needed a reset or replacement. Perhaps it is time to consult with a professional too?

Thanks for sharing your experience! I took your advice and had it checked out. Turns out it was indeed a faulty connection as I suspected. New cable harness fixed the issue. Cost me 95€, but at least I've got proper defrost again for the windshield fogging.