TPMS - Warning Light is on, Lug nut Torque value and Locking Lug Nut

[Ronbye]

I just changed out my stock tires and rims for winter tires and steel rims. After I was finished installing them, I went for a test drive with no issues. A while later, my wife and I went for a drive approx. 100km and during that drive the TPMS default warning light came on and stayed on. I checked the tire pressures and all is good. As I did not install these new tires on the rims, I am not sure if the supplier installed standard tire valves or the TPMS valves. That I will find out after this weekend. But I suspect that they did install the TPMS valves. Assuming that they did, I checked the digital display for the tire pressures and all four tires had no reading. So my questions on this are: Does the TPMS valves have to be programmed or as some would say the computer has to be re-trained? Has anyone ran into this before?

What is the lug nut torque value? I saw 140lbs on-line, but that is a lot of torque. I torque the lug nuts to that value except the locking lug nut. Does that have a different torque value. It feels too flimsy to be able to take that kind of torque.

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[Lordran_Hollow]

Yeah, the TPMS sensors will need to be synced/programmed to the vehicle whenever you add new ones.

And yes, that is the torque value. If you got a cheap lock nut/nut key than that would potentially have some play. But no matter what it's going to feel a bit different on the lock nut as you need to have an extension (the key) between the lug nut and the torque wrench.

 

[TheSEARCH]

Wait a second. You used another set of steel wheels and mounted snow tires? Did you buy TPM's for the new steel wheels? If not WHY would you think you would get them? They cost MONEY. Example on my current Ecosport I bought from Tire Rack new wheels and snow tires which Tire Rack mounted. I paid EXTRA for TPM's I think it was $30 a wheel for the after market tpm's from Tire Rack. They do NOT need any programming from Tire Rack.

 

[Darnon]

Yeah, the TPMS sensors will need to be synced/programmed to the vehicle whenever you add new ones.

The truck will learn new sensors on its own, but 100 km would definitely be more than needed.

Most TPMS valve stems have a smooth brass shoulder section to them between the threads and where the rubber starts.

 

[Ronbye]

The truck will learn new sensors on its own, but 100 km would definitely be more than needed.

Most TPMS valve stems have a smooth brass shoulder section to them between the threads and where the rubber starts.

The next day I drove the warning light was gone and I check the tire pressures indicating on the dash and they were reading 33 psi on all wheels. However, 20 minutes later the warning light came back on it has stayed on.

 

[MakinDoForNow]

The next day I drove the warning light was gone and I check the tire pressures indicating on the dash and they were reading 33 psi on all wheels. However, 20 minutes later the warning light came back on it has stayed on.

Did you park overnight near where the tires with the TPMS were stored?

 

[Ronbye]

Did you park overnight near where the tires with the TPMS were stored?

My summer tires are in my shed about 75' from where I was parked.

 

[MakinDoForNow]

My summer tires are in my shed about 75' from where I was parked.

I don't know what the range is on those? I would think not that far, but? Might add 10 lbs to one and see if it picks that up?

 

[Ronbye]

I don't know what the range is on those? I would think not that far, but? Might add 10 lbs to one and see if it picks that up?

I was actually thinking about doing that. Thanks for the suggestion.

 

[TheSEARCH]

So from this I assume you did buy new TPM's for the new steel wheels . Then the question is what brand TPM. There are factory ford ones and after market. Might help to know where the TPM's came from. Or did the factory tpm's get removed and put into new wheels? I think the best place to ask is from the maker of the tpm's you bought? If that is Ford or some other company. Rather strange the light went out then came back on.

 

[Ronbye]

The rims, tires and the TPMS was from one of our local automotive supply stores. It took them a while to find the right rims and tires. In the meantime, does anyone know if the TPMS by Ford are required to be calibrated by an external device. Better yet, does anyone know if the Maverick has a system of resetting the TPMS similar to that used by push to start button Fords?

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