How can I reset "tire pressure sensor fault" message?

The "tire pressure sensor fault" message is an indication that there is a problem with the tire pressure monitoring system (TPMS). A tire pressure monitoring system is required for all motor vehicles manufactured after 2007. The pressurized air inside the tire is monitored by the TPMS. The TPMS consists of tire pressure sensors which are placed inside each wheel. These sensors provide the driver with information regarding the actual tire pressure of each tire in real time.
All car tires are tubeless, unlike bike tires that have an inner tube that when filled with air inflates the rubber tire. Tubeless car tires have an inner core that is filled with pressurized air. The tire should be filled based on the manufacturer's specified PSI. This can usually be found on a sticker on the driver's side door or trunk. If the tire is overinflated or underinflated, this could cause damage to the tire and/or hazardous driving conditions.
Problems that are possible when a tire is overinflated:

• Shorter lifespan of the tire
• Broken tire belt
• Uneven wear on the tread
• Bad traction-specifically in the rain and snow
• Difficult to steer and/or maneuver (it may feel as if you are driving on ice)
• Decreased friction
• Driver may experience a harsh ride
• Could cause damage to the suspension
• Tire may blowout/explode

Problems that are possible when a tire is underinflated:

• Shorter lifespan of the tire
• Make cause the tread to separate
• Premature wear on the tread
• Decreased fuel economy
• Difficult to steer and/or maneuver (it may feel harder to turn with precision)
• Increased friction
• Tire may blowout/explode

use this link.
http://enginepartsdiagram.com/2007-2016-ford-focus-tire-pressure-tpms-sensor-light-reset/

When the sensors were replaced and they did a reset. They should have told you the problem. They should have told you up front, instead of charging you for sensors. The BCM isn't reading the signal from the sensors. Find another place to go. I hate point and fix mechanics. Sensor fault? replace all the sensors... It didn't say one tire, it says sensor fault. Have the codes read. They should have done this. To get rid of the message on the DIC, you have to unplug it. But this gets rid of all messages you would get. Pull the IP and take it apart to unplug.

Tire pressure sensors are just that, sensitive. If all your tire have the proper pressure and you still are seeing the sensor light and it comes back on after resetting it then the computer sensor monitor is at fault. Unless you can reset your cars' computer you will probably be stuck with going to the dealer for service. Call various other reputable service centers that have certified mechanics before turning out the big green at a FORD dealership though.

check tire pressure in all tires & spare.

2006 Ford Truck Explorer
NOTE: The tire pressure sensor training prcedure must be done in an area without radio frequency (RF) noise. RF noise is generated by electrical motor and appliance operation, cell phones, and remote transmitters.

1. Turn the ignition switch to the OFF position
2. Turn the ignition switch to the RUN position three times, ending in the RUN position. Do not wait more than two minutes between each key cycle.
3. Press and release the brake pedal
4. Turn the ignition switch to the OFF position.

Sequence:
1- Left Front Tire
2- Right Front Tire
3- Right Rear Tire
4- Left Rear Tire

5. Turn the ignition switch from the OFF position to the RUN position three times, ending in the RUN position. Do not wait for more than two minutes between each key cycle.
6. The horn will sound once and the TPMS indicator will flash if train mode has been entered successfully. If equipped, the message center displays "TRAIN LEFT FRONT TIRE." Place the magnet on the valve stem of the LF tire pressure sensor. The horn will sound briefly to indicate that the tire pressure sensor has been recognized by the TPMS module.
7.Within two minutes after the horn sounds, place the magnet on the valve stem of the RF tire pressure sensor. NOTE: If the TPMS module does not recognize any one of the four tire pressure sensors during the tire training procedure, the horn will sound twice and the message center (if equipped) will display "TIRE TRAINING MODE INCOMPLETE." If this occurs, the entire procedure must be repeated from Step 1.
8. Repeat Step 7 for the RR and LR tires. When the tire training procedure is complete, the horn will sound once and the message center (if equipped) will display TIRE TRAINING MODE COMPLETE.

This should help. For now, probably all Fords are like this. And I do not believe that Ford puts sensors in their spares (some GMs do).
Good luck

Firestone Hmmmmmm. Well the reset button is located just under the dash to the left of the steering column, hold for a few seconds and the light should go out. Hopefuly the firestone tech won't tell you your brakes need greasing the next time you go in for service, haha. Oh, I do beleive your tire pressure should be 29 psi. But, you can check your owners manual for correct pressures. It sould also tell you where the reset button is also. That should FixYa good luck.

Must have codes for check engine light cleared with scan tool. Check all tire pressures and road test up to 35 mph. Tire message should clear if low tire was problem. If light for tires remains then possible radio frequency sensor problem. Sensor replacement may be necessary. Sensors have alkaline non-serviceable batteries. If battery is dead sensor will have to be replaced.

It is on the same button as the Trip Odometer. Cycle through until you see Tire Reset and hold the button down.

you need to remove the sensors in you factory wheels or buy new sensors to install in your new wheels. there is no way to turn this option off.