my Ford F-150 Fourteenth Generation (2021-present) doesn't have any heat coming from the vents

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check Coolant Level

• Locate the coolant reservoir and remove the cap.
• Inspect the coolant level; if low, refill with the appropriate mixture (50/50 coolant and distilled water).
• Run the engine with the cap off until it reaches operating temperature to bleed air from the system, then replace the cap securely.

3. Replace Thermostat (if faulty)

• Drain the engine coolant into a clean container.
• Remove the thermostat housing by loosening the bolts (usually 10-12 ft-lbs torque).
• Take out the old thermostat, clean the mating surfaces, and install the new thermostat with the correct orientation.
• Reattach the housing and torque the bolts to the specified value.
• Refill the cooling system with the drained coolant.

4. Flush Heater Core (if blocked)

• Disconnect the heater core inlet and outlet hoses from the engine bay.
• Use a garden hose to flush water through the heater core, ensuring both directions are clear of debris.
• Reconnect the hoses and secure with clamps.

5. Inspect and Replace Blend Door Actuators (if faulty)

• Remove the dashboard panel to access the HVAC system.
• Locate the blend door actuator motors on both sides of the heater box.
• Test the actuators for proper function using a multimeter.
• Replace any faulty actuators and reassemble the dashboard.