Have you tried swapping the two back tires then relearn? I don't think it should matter but if the fault follows the tire then it is the sensor in the tire. If the fault stays with the right rear you have a problem in the truck. FWIW I have retrained mine after rotation with no problems.

 

Here a good thread to look at as well !
https://www.f150forum.com/f38/tpms-s...2/#post2383691

 

Finally, I got it to work. I used the brake and key cycle procedure below.


For Keyed-ignition models:
1) Make sure all tires are inflated to the vehicle’s recommended inflation pressures (found in the owner’s manual on the door placard).
2) Turn the ignition switch to OFF then press and release the brake pedal.
3) Turn the ignition switch from OFF to RUN (engine OFF) 3 times, ending in the RUN position. Do this within 10 seconds.
4) Press and release the brake pedal.
5) Turn the ignition switch back to OFF.
6) Turn the ignition switch from OFF to RUN (engine OFF) 3 times, ending in the RUN position. Do this within 10 seconds.
7) The horn should sound letting you know the vehicle has entered into TPMS relearn mode.
8) Place the top of the TPMS triggering tool against the sidewall of the driver’s side front tire in the location of the valve stem. Press the left button, wait until the horn sounds, then press the right button to turn the tool off.
9.) Once the horn sounds, move on to the passenger side front tire and repeat the process. Each tire should only take 30 seconds or less.
10) After the passenger side front tire has been learned, continue on to the passenger side rear tire and finishing with the driver’s side rear tire.
11) You may now turn the ignition to OFF. If the horn does not sound, the sensors were learned successfully. If the horn sounds twice, then the process must be repeated because there was a malfunction.

 

I figured that would fix your problem! Glad it worked for you!

 

Below is text right out of the owner manual for the procedure pushing the hazard/flasher button three times.

TPMS reset tips:
• To reduce the chances of interference from another vehicle, the TPMS
reset procedure should be performed at least 3 feet (1 meter) away
from another Ford Motor Company vehicle undergoing the TPMS reset
procedure at the same time.

This lead me to believe it would pick up any sensor within range. That is not the case, you must use the brake pedal and key cycle procedure to get it to register a new sensor.

 

Glad you got it working!


14silverfx4 was absolutely correct about the requirement to use the ignition on-off/brake method to get the truck into the learn mode.


Like he said, the emergency flasher procedure will work to reprogram sensors that are currently logged into the TPMS memory, i.e. when you do a tire rotation and keep the same sensors but just need to program their new position on the truck.


Any sensor whose ID# is not currently in the TPMS memory will need to be logged in by putting the truck into the learn mode using the ignition on-off/brake method.


I've made a video and will post it up after I get it uploaded.
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This thread provided some very valuable information!! Great Job.
However, I now have a question. One of the relearn methods mentioned apparently applies to tire rotations. I have rotated the tires on my 2012 a couple of times now and have no TPMS issues. As the FORD TPMS system doesn't indicate which tire is low on air when it lights the TPMS Indicator, is it really that important to relearn the sensor locations after a rotation ??

 

I have been at a dealer for 28 years...never heard of the flasher method.. Reguardless if your rotating tires or servicing the tpms..we always use the key on/off and pedal method...to train them

 

twotoilets - I would say not important for the stock system unless it is the dealer trying to find which one is low/defective. I have an aftermarket head unit that can tell me which one so it is important to me. Yes the Ford TPMS knows which one but does not tell you the driver which one.

 

No!! At least not for most of us. My tire pressure sticker says to run 35 psi all around - front and rear.


Because our TPMS doesn't tell us what the pressures are in each of the tires (like my Chebie does), it really doesn't matter at all. When we get a low pressure alert we have to check all the tires with a gauge to see which one is low - unless it's totally flat and sitting on a squished sidewall.

Here's a picture of the tire pressure sticker on an F150 with the Heavy Duty payload option:






You can see that it shows to run 55 psi up front and 60 in the rear tires. I think some may have 65/55.


The low tire pressure alert comes on when the pressure in a tire gets 25% below the pressure that the TPMS is programmed to expect.


25% of 60 is 15, so you wouldn't get a low tire pressure alert until the pressure gets below 45 psi.


So....if you have a truck that calls for different tire pressures front and rear, if you rotate tires you should do the relearn procedure to log the sensors in to their current location.
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