my Ford F-150 14th Generation (2021-2024) fuel gauge is inaccurate what's the issue

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, fuel line disconnect tool, safety glasses, gloves.
• Ensure the vehicle is parked on a level surface and the engine is turned off. Disconnect the negative battery terminal.

2. Access the Fuel Sender Unit

• Lift the vehicle using a jack and secure it with jack stands.
• Remove the fuel tank shield (if equipped) by unscrewing or unclipping the fasteners.
• Disconnect the fuel lines using the fuel line disconnect tool, ensuring to catch any fuel that may spill.
• Remove the retaining ring securing the fuel pump module using a suitable tool, then carefully lift the module out of the tank.

3. Inspect and Test the Fuel Sender

• Visually inspect the fuel sender for damage or wear.
• Use a multimeter to measure the resistance of the sender unit; it should change as the float moves. Compare readings to manufacturer specifications.
• If the sender unit is faulty, proceed to replace it.

4. Replace the Fuel Sender Unit

• Install the new fuel sender unit into the fuel tank, ensuring it is seated properly.
• Reinstall the retaining ring to secure the fuel pump module.
• Reconnect the fuel lines and ensure all connections are tight.

5. Reassemble and Test

• Reattach the fuel tank shield and lower the vehicle.
• Reconnect the negative battery terminal.
• Start the engine and check for fuel leaks around the sender unit.
• Monitor the fuel gauge for accurate readings after the repair.