Tire Pressure Monitor System warning

[GulfCoastBronco]

I’ve had this warning go off on me twice in the last week or so. Both times right, first rear then front. No flats no visible issues. Warning in dash then Ford pass. Psi screen showed blank on the tire as opposed to the level. After pulling over and inspecting warning disappeared after restarting. About to go visit my folks 200 miles away and wondering if I need to go to the dealership first. Anyone else experience this or have thoughts?

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[Jess1]

Sounds like a sensor isn't working...

 

[Major Kong]

Had to delete first post
Brain quit working

I'd say probably a communication breakdown
But my first move would be to take pressure reads on the tires involved
Cold tires versus warm tires after driven will have different pressure values
If their temps are right at the threshold of a pass/fail a few miles of driving on a cold tire might warm it just enough to cancel the fail read
Make sense?

 

[GulfCoastBronco]

Had to delete first post
Brain quit working

I'd say probably a communication breakdown
But my first move would be to take pressure reads on the tires involved
Cold tires versus warm tires after driven will have different pressure values
If their temps are right at the threshold of a pass/fail a few miles of driving on a cold tire might warm it just enough to cancel the fail read
Make sense?

Yes makes sense. I’ve also noticed when it happens the reads are kinda high. Weather has been all over lately and have seen them read as high as 45. When it triggers I see most over 43. Is it strange to think because the computer wants me at 33 I could be exceeding what it considers a max?

 

[Osco]

I add air when cold weather comes and let it out when warm weather comes.
A ten degree drop in air temp nets a one psi drop. We go up and down sometimes 50 degrees F. I think it comes on when it see’s 28 psi. But then the off road guys go lower when they go out.
Sound off dirt riders !

 

[GulfCoastBronco]

Still having TPMS sensor issues. Yesterday had the guys @Discount Tire deflate my psi to 40. Today they got up to 43 and one of them faulted out. No flat no visible issues. Ford Pass tells me 33psi but the AT3 have a 50 psi max and have been set to 40. Not sure why this keeps triggering. But going to call my dealer when I get back in town.

 

[Warpious]

I'd still set them closer to 33 personally, mine are are 35 right now and that's close enough for me to not fidget with it but 40+ seems up there. I agree it shouldn't kill the TPMS though, but it doesn't know what the tire Max is so it's possible it's not designed for 40+

 

[GulfCoastBronco]

I'd still set them closer to 33 personally, mine are are 35 right now and that's close enough for me to not fidget with it but 40+ seems up there. I agree it shouldn't kill the TPMS though, but it doesn't know what the tire Max is so it's possible it's not designed for 40+

Thanks, what tires are you running?

 

[Mark S.]

Still having TPMS sensor issues. Yesterday had the guys @Discount Tire deflate my psi to 40. Today they got up to 43 and one of them faulted out.

Sounds like a bad sensor. Have you tried swapping tire positions to see if the bad indication moves with the tire?

 

[Warpious]

Thanks, what tires are you running?

I just put on 245/65/17 Cooper AT3 4S this past Monday. They're awesome.

 

[Jess1]

"Ford Pass tells me 33psi but the AT3 have a 50 psi max"
Your tires are dangerously overinflated. The "MAX" number is just that - and only used in transportation/bead seating.
FWIW, 10 degrees F is approx 1 PSI, so at the mid 40s with ambient temps in the 40s, you'll be well over the max (meaning if tire blows up, it's your fault) at the 80 forcasted for next weekend (not now. It's chilly out there...)

 

[jsus]

"Ford Pass tells me 33psi but the AT3 have a 50 psi max"
Your tires are dangerously overinflated. The "MAX" number is just that - and only used in transportation/bead seating.
FWIW, 10 degrees F is approx 1 PSI, so at the mid 40s with ambient temps in the 40s, you'll be well over the max (meaning if tire blows up, it's your fault) at the 80 forcasted for next weekend (not now. It's chilly out there...)

OP genuinely doesn't care or is trolling, can't even be bothered to put the phone down while driving, and wants to blow those tires. ?‍

 

[Jrl]

OP genuinely doesn't care or is trolling, can't even be bothered to put the phone down while driving, and wants to blow those tires. ?‍

33 psi definitely maybe 35

 

[GulfCoastBronco]

OP genuinely doesn't care or is trolling, can't even be bothered to put the phone down while driving, and wants to blow those tires. ?‍

Took the picture to get more feedback. As it’s happened multiple times and no flats. Also have gone to Discount Tire and they have deflated tires and told me they are within the recommended use. Please give me further expertise as a tire professional.

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