This procedure covers the replacement of a Tire Pressure Monitoring System (TPMS) sensor on a 2021-2024 Ford F-150 with 3.5L EcoBoost engine, including wheel removal, tire demounting, sensor replacement, and system relearning.

Warnings

Tools required

Parts

• TPMS sensor × 1 — Motorcraft TPMS19 or equivalent 433 MHz sensor
• TPMS valve stem and service kit × 1 — Use OEM specification
• Valve core × 1 — Included with service kit

Preparation

1. Park vehicle on level ground and engage parking brake
2. Loosen wheel lug nuts on the wheel with the faulty TPMS sensor before lifting vehicle
3. Lift vehicle with floor jack at appropriate jacking point and secure with jack stands
4. Ensure tire shop equipment is available if performing tire demounting yourself

Procedure

1. 1

   Remove wheel from vehicle
   Remove the lug nuts completely and take the wheel off the vehicle. Keep lug nuts in a safe place for reinstallation.
2. 2

   Deflate tire completely
   Remove the valve cap and use a valve core removal tool to extract the valve core. Allow tire to deflate completely. This prevents damage to the TPMS sensor during tire demounting.
3. 3

   Break tire bead
   Using a tire machine or manual bead breaker, break both tire beads (inner and outer) from the wheel rim. Position the bead breaker away from the valve stem area to avoid damaging the TPMS sensor location.
4. 4

   Demount tire from wheel
   Carefully demount the tire from the wheel using a tire changing machine. When the tire head approaches the TPMS sensor location (opposite the valve stem), use extra care to avoid hitting or damaging the sensor with the tire spoon or machine head.
5. 5

   Remove old TPMS sensor
   Locate the TPMS sensor mounted to the inside of the wheel rim. The sensor is typically held by a hex nut on the valve stem. Unscrew the mounting nut and remove the old TPMS sensor from the wheel. Note the orientation and position for the new sensor installation.
6. 6

   Install new TPMS sensor
   Install the new TPMS sensor into the valve stem hole in the wheel rim. Ensure the rubber grommet or seal is properly seated. Thread the mounting nut onto the valve stem and hand-tighten. Do not overtighten as this can damage the sensor or valve stem. Torque to manufacturer specification (typically 4-6 lb-ft, but use hand-tightening if no specific torque is provided).
7. 7

   Mount tire onto wheel
   Position the tire back onto the wheel rim, ensuring the tire bead is properly aligned. Use tire mounting lubricant on the tire beads only, avoiding contact with the TPMS sensor. Mount the tire using the tire changing machine, keeping the mounting head away from the sensor location during the process.
8. 8

   Inflate tire and check for leaks
   Install a new valve core and inflate the tire to the recommended pressure (check door jamb sticker, typically 35 PSI for F-150). Apply soapy water solution around the valve stem to check for air leaks. Verify proper seal before proceeding.
9. 9

   Reinstall wheel on vehicle
   Place the wheel back onto the hub, ensuring it seats properly against the mounting surface. Install lug nuts and hand-tighten in a star pattern. Lower vehicle until tire just touches the ground to prevent wheel rotation during final torquing.
   Torque spec

   Wheel Lug Nuts140 Nm (103 lb-ft)
10. 10

    Perform TPMS relearn procedure
    Use a TPMS relearn tool or Ford IDS scan tool to program the new sensor ID to the vehicle. For 2021-2024 F-150, turn ignition to ON position (engine off). Use the TPMS tool to activate the sensor and transmit its ID to the vehicle PCM. Follow the tool's instructions to complete the relearn for the affected wheel position. The vehicle may require a specific relearn sequence starting with the LF wheel.

Reassembly

1. Verify all lug nuts are torqued to specification in a star pattern
2. Remove jack stands and lower vehicle completely to the ground
3. Reinstall valve stem cap to protect valve core from debris

Verification

• Start the engine and verify the TPMS warning light on the instrument cluster goes off after a few seconds of driving
• Use the vehicle information display to confirm all four tire pressures are reading correctly
• Drive the vehicle at speeds above 20 MPH for at least 2-3 minutes to ensure the TPMS system communicates properly
• Verify tire pressure is set to the recommended specification on the driver door jamb sticker
• If TPMS light remains illuminated, re-verify the relearn procedure was completed correctly or use a scan tool to check for stored TPMS fault codes

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