How to Reset the Tire Pressure Sensor Fault on a 2015 Ford F150? | Relearn Order

Ford’s 2015 F-150 fix is a manual four-sensor relearn: enter reset mode with the hazards, then trigger each valve in a fixed wheel order.

Ford’s manual covers how to reset the tire pressure sensor fault on a 2015 Ford F150 in a short sequence of ignition, hazard, and valve steps, and the order decides whether it takes. What sinks most attempts is timing — three hazard-flasher cycles inside 10 seconds, then four valve triggers inside two minutes of each other.

A reset only clears the message when the sensor behind it still works. Ford’s fault message points at either a malfunctioning sensor or the spare tire being installed, and a dead sensor will never answer the horn no matter how many times you restart the sequence. What follows separates the two.

What Does A Flashing Then Solid TPMS Light Mean?

A light that flashes for roughly one minute and then stays illuminated means the system has logged a malfunction, not a softly inflated tire. Ford names two triggers for the Tire Pressure Monitor Fault message: a wheel sensor that is malfunctioning, or the spare tire fitted in place of a road wheel.

Read the first column before touching a valve. Light behavior splits a sensor problem from a pressure problem, and only one of those responds to a relearn. Comparing each tire to the tire-information label on the driver’s door jamb costs nothing and rules out the easy case first.

Ford’s Reset And Relearn Procedure, Step By Step

Reset mode needs the ignition on with the engine off, then three hazard-flasher cycles within 10 seconds, confirmed by one horn sound, a flashing indicator, and an information-display message. Sensors then train in a fixed order: left front, right front, right rear, left rear.

1. Drive above 20 mph (32 km/h) for at least two minutes, then park where all four tires and an air pump are within reach.
2. Switch the ignition off.
3. Switch the ignition to ON with the engine off.
4. Turn the hazard flashers on and off three times within 10 seconds.
5. Watch for the three confirmations: one horn sound, a flashing TPMS indicator, and a message in the information display.
6. At the left-front valve, pull the cap and bleed air until the horn chirps once.
7. Repeat at right front, right rear, then left rear, each trigger less than two minutes after the last.
8. Refill all four tires to the pressure on the tire-information label and refit the caps.

One chirp at each wheel means that sensor’s ID was learned for the position; a double horn means that wheel failed and all four restart. You’ll know it took when the fourth chirp lands and the indicator stays dark after you refill. Ford’s 2015 F-150 owner’s manual prints the full sequence and the warning that repeated failures should go to an authorized dealer.

Resetting A Tire Pressure Sensor On A 2015 F150: Where The Relearn Goes Wrong

Failures trace back to timing and order far more than to the truck itself. A skipped drive cycle, hazard flashes spread past 10 seconds, or a start at the wrong wheel leaves reset mode unentered or assigns a sensor ID to the wrong corner.

• Skipping the drive. The manual requires the above-20-mph run before the sequence begins.
• Slow hazard cycles. Three on-off cycles must land inside 10 seconds.
• Starting anywhere but left front. The order is position-specific, and guessing scrambles the learn.
• Waiting too long between wheels. Past two minutes the system times out and all four restart.
• Bleeding air with no pump. Every tire has to go back to label pressure afterward.
• Blaming pressure for hardware. A damaged, missing, or unactivated sensor keeps the lamp lit.

Replacement sensors carry their own condition: Ford states that sensors not installed and activated leave the monitor light on, and the company’s activation tool is what retrains them after a rotation. If the horn stays silent through repeated, correctly timed attempts, the manual routes you to dealer diagnosis.

If a sensor turns out to be the culprit rather than the timing, our tested roundup of 2015 F150 tire pressure sensor options covers what fits and what needs activating.

Work the decision in this order: pressures against the label, the spare ruled out, the drive cycle, then the relearn. A lamp that goes solid after a properly completed relearn means hardware — the next move is a scan, not a fifth attempt.