2012 F350 TPMS issue
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2012 F350 TPMS issue
Last year I upgraded my tires and wheels from 18" to 19.5" and now run Toyo commercial tires. I pull a heavy fifth wheel and needed a little extra tire capacity that the OEM was a little short on.
I started getting this message: Tire Pressure Monitor Sensor Fault Light. A couple of dealers thought is was just a relearn problem. Not quite...
I hope I have this right since it is difficult to know what you don't know and apparently neither does anyone else that I have asked.
Since I'm moving from 80 PSI tires to 110 PSI tires, the new sensor IDs will need to be loaded into the ECU. In order for the ECU to make sense of the new 110 PSI sensors, the values of the placard in the ECU will need to be changed so that the comparison between the ECU and the sensors match. Update the placard, load the new sensor IDs, relearn the sensor / tire positions and good to go. Right?
Does anyone know if I'm missing something here? I found a tool from Bartec that can help, but if there is another tool I should consider - that would be helpful.
I started getting this message: Tire Pressure Monitor Sensor Fault Light. A couple of dealers thought is was just a relearn problem. Not quite...
I hope I have this right since it is difficult to know what you don't know and apparently neither does anyone else that I have asked.
Since I'm moving from 80 PSI tires to 110 PSI tires, the new sensor IDs will need to be loaded into the ECU. In order for the ECU to make sense of the new 110 PSI sensors, the values of the placard in the ECU will need to be changed so that the comparison between the ECU and the sensors match. Update the placard, load the new sensor IDs, relearn the sensor / tire positions and good to go. Right?
Does anyone know if I'm missing something here? I found a tool from Bartec that can help, but if there is another tool I should consider - that would be helpful.
Post Fiend
Joined: Nov 2001
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From: Tallassee, ALabama
I am not sure the tool will help on the 2011 and up trucks. There are no programmable parameters in the TPMS module, so, if the relearn procedure does not solve the problem, you might have sensors in the tires that are not compatible?
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My understanding is that the Bartec Tech500 can change the placard value in the ECU. The placard does not contain the information for 110 PSI sensors, so that needs to be changed. My sensor part number is: 9L3Z-1A189-A which is a Ford product. The Forscan product can change the placard values down from 80 PSI, but not sure is it will support a higher limit. The relearn process would work if the comparison to the placard value could be updated. Maybe there is a code available and needs to be activated. I'm not an expert, so I'm still figuring it out.
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If it was a one off - it would be a no brainer. I switch wheels since I live in a cold climate and need the OEM tires and 4 wheel drive to get around. I will switch twice a year, so I'll be calculating the cost of owning a tool versus going to someone who can do this for me. Mind you I've already been to 3 Ford dealerships and they have no clue about this. They believe is is a relearn problem. That is only one third the issue. I will probably need to find a knowledgeable tire shop.
Cargo Master
Joined: Feb 2015
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From: Livermore Ca.
110 pounds of air seems like a lot of air for a tire on a P/U. I can see it for a big rig or a flat bed tow truck so you may be able to just run 80 pounds and be ok for those tires. At 110 pounds they will be rock hard.
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Does any one on the forum have a TPMS expert contact that I can confirm my analysis before I attempt the change?
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