Ford Fusion Tire Pressure Sensor Fault Reset

The messages “Tire Pressure Sensor Fault” and “Low Tire Pressure” do not mean the same thing:

Warning Meaning
Low Tire Pressure One or more tires need air or may have a leak.
Tire Pressure Sensor Fault A wheel sensor is not communicating, is damaged, has a dead battery, or the temporary spare is installed.
Tire Pressure Monitor Fault The TPMS system, receiver, wiring, or control module may have a malfunction.

A genuine sensor fault usually cannot be permanently cleared by pressing a reset button. The underlying problem must first be corrected.

Basic Reset Procedure

Try this first if the warning appeared after a temperature change or after adjusting tire pressure.

  1. Park the Fusion on level ground.
  2. Allow the tires to cool for at least three hours.
  3. Check all four tires with an accurate pressure gauge.
  4. Inflate each tire to the pressure printed on the driver-side door-jamb tire label.
  5. Do not use the maximum pressure printed on the tire sidewall.
  6. Inspect the tires for nails, leaks, sidewall damage, or damaged valve stems.
  7. Start the vehicle.
  8. Drive above 20 mph (32 km/h) for at least 10–20 minutes.

Ford states that after correcting tire pressure, the vehicle may need to be driven above 20 mph before the warning turns off.

TPMS Sensor Relearn Procedure

A relearn may be necessary after:

  • Installing new TPMS sensors
  • Replacing wheels or tires
  • Rotating the tires
  • Changing between summer and winter wheels
  • Disconnecting or replacing certain TPMS components

The exact method varies by model year. Many Ford Fusion models can use the following procedure with a Ford-compatible TPMS activation tool, such as the Motorcraft TPMS-19 or a compatible aftermarket tool.

Preparation

  1. Inflate all four tires correctly.
  2. Set the parking brake.
  3. Put the transmission in Park.
  4. Turn off all electrical accessories.
  5. Keep the activation tool close to the tire sidewall near the valve stem.

Enter Training Mode

For many Fusion models equipped with a physical ignition key:

  1. Switch the ignition to OFF.
  2. Press and release the brake pedal.
  3. Turn the ignition from OFF to RUN three times, ending in RUN. Do not start the engine.
  4. Press and release the brake pedal.
  5. Turn the ignition to OFF.
  6. Turn the ignition from OFF to RUN three more times, ending in RUN.
  7. The horn should sound once, and the display may show “Train Left Front Tire.”

For push-button-start models, the procedure may differ. Press the START button without pressing the brake when an ignition-on step is required. Some model years enter training mode by switching the hazard lights on and off three times within ten seconds.

Train Each Sensor

Activate the sensors in this exact order:

  1. Left front
  2. Right front
  3. Right rear
  4. Left rear

At each wheel:

  1. Hold the TPMS activation tool against the tire sidewall near the valve stem.
  2. Press the activation button.
  3. Wait for the horn to sound.
  4. Move to the next wheel.

After the left-rear sensor is accepted, the horn should sound and the display may show “Training Complete.”

Do not wait more than approximately two minutes between wheels, or training mode may time out.

If You Do Not Have a TPMS Tool

Some systems can be trained by changing tire pressure, but this method is less convenient:

  1. Enter TPMS training mode.
  2. Starting at the left-front tire, release air until the horn sounds.
  3. Continue in the order: left front, right front, right rear, left rear.
  4. After training, inflate every tire back to the door-label specification.

Use caution because excessive deflation can make the vehicle unsafe to drive.

Why the Fault Returns

If the warning returns after relearning, common causes include:

  • Dead sensor battery: TPMS sensor batteries commonly last approximately 5–10 years and are not normally replaceable separately.
  • Damaged sensor: Tire installation equipment can break the sensor or valve stem.
  • Wrong sensor frequency: Replacement wheels may contain incompatible sensors.
  • Unprogrammed sensor: A new universal sensor may need to be programmed before relearning.
  • Temporary spare installed: The spare may not contain a compatible TPMS sensor.
  • Missing sensor: Aftermarket wheels may have ordinary valve stems without TPMS sensors.
  • Receiver or module fault: Less common, but possible when none of the sensors communicate.
  • Radio interference: Some electronic accessories can temporarily interfere with sensor signals.

Warning-Light Behavior

  • Light remains steadily illuminated: Usually indicates low tire pressure.
  • Light flashes for about one minute and then stays illuminated: Usually indicates a TPMS malfunction or missing sensor.
  • Fault appears only with a spare tire installed: This may be normal because the spare may not have a recognized sensor.

Ford identifies “Tire Pressure Sensor Fault” as a sensor malfunction or possible spare-tire condition and recommends service if the message remains present. Ford Fusion owner information

Professional Diagnosis

A tire shop or Ford technician can:

  1. Scan each wheel sensor individually.
  2. Identify which sensor is not transmitting.
  3. Check sensor battery condition and identification numbers.
  4. Read TPMS diagnostic trouble codes.
  5. Program and relearn replacement sensors.

Replacing the failed sensor and completing the relearn procedure is normally the permanent repair. Disconnecting the vehicle battery, clearing dashboard messages, or repeatedly cycling the ignition will not repair a dead or damaged TPMS sensor.

Second-level menu