Vent control cycles to defrost. floor and then back to vent. Any ideas?
Dual AC dash control cycles from the vent to defrost , floor and sometimes back to vent. Other times it just gets stuck on the defroster and while blowing cold air does not cool car.
This HVAC system uses servos to adjust the settings, sometimes they get messed up and out of sync, you can try to get then to resend by Removing the fuses from the HVAC system and wait at least 10 minutes, then turn on the key, do not start, and reinsert the fuses, this should reset the system, if it didn't work then you will need to,take it in to a shop you trust and have the codes for the HVAC diagnosed. HTH
System did not reset. Problem continues to be a nuisance.
Then it's time to head for the shop.
Looking for a Used Five Hundred in your area?
CarGurus has 20 nationwide Five Hundred listings starting at $1,934.
Search Ford Five Hundred Questions
Ford Five Hundred Experts
Related Models For Sale