Kia Optima Hybrid: Cooling System / Active Air Flap(AAF) Description and Operation

Description
The AAF (Active Air Flap) is located between radiator grille and radiator, and consists of an actuator and 6 air flaps. The system receives information from EMS, FATC, TCU, MCU and LDC via CAN communication . With this information, the AAF controls the motor properly then the air flaps adjust air flow from radiator grille.
During high speed driving, it will reduce the air resistance by closing the air flaps. This improves the fuel efficiency and enhance the driving stability. If overheat occurs, the system will open the air flaps to drop the temperature.
During the A/C operation, the system will open the air flaps to maintain the refrigerant pressure.The system will close the air flaps to warm up the engine rapidly during cold start.
Specifications
Items
Specifications
Operating temperature
-22~185°F (-30~85°C)
Operating voltage
DC 9~16V
Rated voltage
DC 12V
Rated current (No load)
300mA or less

Thermostat Troubleshooting

Troubleshooting SymptomsPossible CausesRemedyCoolant leakage • From the thermostat gasket Check the mounting bolts • Check the torque of the mounting bolts • Retighten the bolts and check leakage ...

Active Air Flap(AAF) Components and Components Location

Components 1. Air duct2. Cover3. Actuator assembly4. Loader5. Flaps6. Link7. Housing ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Rear Bumper Components and Components Location


Components(1) 1. Rear bumper cover2. Rear under cover assembly Components(2) 1. Rear bumper cover2. Rear reflector3. Rear bumper lower cover4. Rear bumper energy absorber5. Wiring harness6. Rear bumper beam assembly ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Rear Lower Arm Repair procedures


Replacement 1. Remove the rear wheel & tire. Tightening torque: 88.3 ~ 107.9N.m(9.0 ~ 11.0kgf.m, 65.1 ~ 79.6lb-ft)     Be careful not to damage the hub bolts when removing the rear wheel & tire. 2. Loosen the nut and then remove the rear stabilizer link (B) from the rear lower arm (A). ...

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