Transit Rear Ventilation Issue

Sounds like what happened with my 2019 Audi A4. It was a loose connection in the climate control system. Check the wiring and connectors for damage. Did you check the fuses already?

Thanks, I'll check the wiring. Which specific fuses should I check for the rear ventilation flap? Any diagnostic procedures for testing the electrical connections?

Check the fuse box, usually in the passenger compartment or under the hood. Your owner's manual has the fuse designations for climate control and rear ventilation. Given the symptoms, a qualified technician with diagnostic equipment might be needed. I ended up taking mine to the shop.

I took the Transit to a Ford technician, and it was a faulty connection in the rear ventilation system, like you thought. The repair was 95€. Thanks!