2013 F350 6.7 CCSB. Got a low tire pressure message this morning. Topped off all 4 tires ( 65 psi front, 80 psi rear ). Drove 40 miles and still have the fault message. Forgot to check the spare tire. Any ideas?

 

My spare does not have a TPMS sensor. Unless you added one yourself, I doubt the spare is the issue. Drive it a bit more to see if it resets.

TPMS sensors have a "normal" life of seven to ten years. You may have one that reached it's end of life.

 

Do you by chance have a phone charger plugged in? Or maybe some other 12dvc device that uses a power port? It is a known problem that some phone chargers will cause a TPMS fault.

 

Judging by the age of your vehicle you most likely have a faulty TPMS sensor in one of the wheels. Which one is it is the real question. If you have a OBDII adapter that will connect to a smart phone or Windows PC you can use an app like Torque Pro or Forscan to read the individual tire pressures. The one that is reporting 0 psi would be the bad sensor. This might be a good time to replace all 4 sensors since they most likely will fail one at a time within a short span of one another.

 

Give it a couple key cycles You did have a low tire correct?

 

I had the same issue after a cold snap, warning light on, checked all tires, all good. In my case i had to re-learn the TPMS on each wheel. That took care of the problem, I was glad i did not have a bad sensor.

 

Nothing to add here but that my 16 which I've had just over 3 years, now has a TPMS fault I have to fix. My pressures are good but the sensor is bad.

 

That seems a bit early to fail. It should be covered under the 3/36 warranty. Probably under extended warranty if you have that.

 

I do have an extended warranty. I'll have to check that out. Thanks.

 

I have a bad TPMS, and it's been a pain for years. I have a long bed, and to me it's clear the signal to/from the rear tires is at its limit. That said, the system is pretty stupid in that it doesn't monitor real time. When I put my non-sensor winter wheels on, it takes the system a lot of driving before it recognizes that there aren't sensors talking to it. In my case, it's not the wheel sensors because I rotate the stock wheels each time I put them on, which means the rear tire sensors are actually different ones after each rotation. Normally I see the Left Rear wheel is the one that's not communicating because the tire pressure doesn't change in Torque Pro (it doesn't go to zero). I've asked dealers to fix it, and they never get it resolved. Right now my truck is in the shop for a coolant leak, and I put my summer/stock wheels back on this last weekend so they could troubleshoot the TPMS faults. Sometimes I get a TPMS System Fault and other times I get a TPMS Sensor Fault. I retrained the system to know which wheels were on the four corners. It took 6 attempts to train, and that's with my front doors open, which is necessary to communicate with the rear wheels. Within 20 minutes of driving towards the dealership, and TPMS Sensor Fault popped up. I took a picture of the fault in case it disappeared, but it was still in place when I arrived at the dealership. I told the Service Writer to not let the mechanic focus on the individual wheel sensors, and I explained why. I then explained why I see this as a signal strength issue between the TPMS's antenna and rear sensors. Time will tell what they do. I am still in my extended warranty. Hopefully this history gives the OP some insight as to what a pain this system is.

 

Finally got around to this. 1 tire was 5 psi low. Did the TPMS learn procedure and all is good.

 

Dealership’s tech did a test and replaced the RF sensor. Told them it was a system problem because I rotate my tires and get a system fault vice a sensor fault sometimes. Plus, I see the tire pressure on all tires, and when a fault occurs it’s almost always the LT tire who’s pressure doesn’t change as the tires warm up. Before I got home from the dealership a sensor fault popped up! I told them, and now it goes back again. This truck has done this since I bought it.

 

Is there anyway using forscan to just turn this system off? I have 3 sets of wheels for my truck and find it a pain to have the system relearn every time I change them.

 

That's what I want to know ?

 

You should be able to go into the BCM using FORScan and disable the TPMS. The DRW trucks come with the TPMS module but is disabled. Here is the data from the spreadsheet for TPMS

BCM

726-22-01 *0** **** **** TPMS Disabled BCM
726-22-01 *1** ABCD **** TPMS Enabled AB=Front Tire pressure converted to hex, CD=Rear Tire pressure converted to hex

My DRW is the same as the first line above.