which wheel?
And then-battery? sensor?
Thanks

 

well, so the warning was on all night time driving last night,with multiple restarts.
Read some articles about electronic interference with ie. phone chargers.
So it just happened the just before driving I've installed new high power LED fog lights.Decided to check it this morning.When I started the truck,the warning was gone,so the sensors communicated well over night.Started driving with no problem,and then turned on the fog lights-after about 20 min the freakin warning was back on!!!The LED's are the culprit here.
BTW, some time backhad problems with my wireless garage opening and read stuff about proven LED interference,even from outside the house,like water fountains etc.
Just FYI here boys.

 

Any tire shop can fix it.

 

Good deal. Can someone move this to the original thread?

 

Threads merged.

- Jack

 

Rather than starting a new thread, I'll ask here: I have factory sensors on my 2007 F150, which trigger a constant "fault" on my dash. I took these stock wheels off at one time, but put them back on and cannot get this resolved. Two tire shops in my area have the devices that reset the sensors, but neither of them have been able to detect them on my truck; although, I know they are there. Any suggestions would be greatly appreciated.

 

I don't have these devices in my truck, but do in my car.

In my car, the reset procedure is described in the owner's manual and involves manipulating certain dashboard controls to reset the low pressure warning.

Have you checked your owner's manual?

- Jack

 

Unfortunately, there isn't any kind of reset procedure listed in the manual. Basically, it says to take the truck to a certified dealer if there is any kind of error message, which I have done. I don't know if I need new sensors or what. I doubt that would do anything, being that none of these sensors are being detected by multiple shops.

 

http://www.aa1car.com/library/tpms_ford_f150.htm

However, after 8 years the batteries in the sensors are probably dead and they cannot be easily or reliably replaced.

 

Thanks for that link. Are you saying if the batteries in the sensors are "dead," I'm basically out of luck? I really don't care about the fault message, being that I can simply hit the reset button to clear it before driving, but regardless, I'd like to get it fixed; I'd just rather not spend hundreds of dollars for such a minor thing. I have seen cheap sensors on Ebay, but I'm unsure if it is something that an average Joe like myself can install and get working properly.

 

IIRC somebody on this forum was selling those sensors CHEAP a few months ago. FWIW I had one bad one and my usual tire shop wanted $80 to replace it and that was when they already had the tire off to replace it. I told them no. I'd live with it for that price. The next time I needed tires I went to a different tire shop (Tire's Plus) and they replaced it for about $50. It pays to shop around.

PS: I made them kept the old one and return it to me. I'm an engineer by trade and have worked in electronics for the almost 50 years and I'm used to reverse engineering things so one day I'm going to open it up and see what the story is. 10 to 1 it's just a tiny Li battery that needs to be replaced!

I just went and got it and looked. It's potted. MEK will probably fix that!

Average Joe can replace these IF you have the capability to remove and reinstall a tire! The sensor is mounted to the inside of the valve stem. The valve stem has a taper in the end with a groove it. You insert the end of the valve stem through the rim from the inside and pull it through until the taper goes through the hole and the groove in the valve stem seats. The sensor just hangs on the inside end of the valve stem. It doesn't actually have anything to do with the stem.

 

Great, thanks. Let me ask you this: my stock sensors are the ones that actually mount around the entire circumference of the wheel. Can I take those off and install the sensors that mount near the stem with minimal issues or would it be better to stick with the ones that mount around the wheel?

 

Oh. You have the older style sensors. I don't think that they'll interchange, I think that they work on different Radio Frequencies.