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2011-2015 F-150 Vehicles- Uncommanded Blower Motor Speed Change Or Recirculation Door Movement
2011-2015 F-150 vehicles may experience uncommanded recirculation door movement or have a perceived uncommanded blower motor speed change.
Incoming air may be automatically recirculated in some instances in order to improve vehicle warm-up time in cold conditions or cool-down time in hot conditions.
You may notice a change in the blower motor sound between recirculated mode and other air flow modes.
This is a normal climate control strategy in both manual and automatic modes.
See the Owners Manual for more information.