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Does anyone know if there has been updates to the truck that have affected the TPMS settings? I installed new tires in July and lowered the pressure in the rears to drive a little smoother. Well, for the last week or so the low tire warning keeps coming up. Tire pressures have not changed and I've actually raised the rears up a bit. running 60 front and 70 rear and they still show as low. I crawled underneath to check the spare and they mount it valve up so I couldn't check it.
Any ideas? The manual indicates it might be a bad sensor.
Same thing is happening to me. Light came on one tire. Immediately went and put some more air in it more then the other tires and light never came off. Now the light is on the other rear tire as well and it has same air as other tires. Very annoying.
ambient (fall/winter) temperature change is likely a contributor as it has probably dropped below the factory warning threshold.
i have heard that the only way to resolve it is to take the tire pressure back up to the (door tag) max drive it (to get rid of the warning) and then take the pressure back down.
ALTERNATIVELY (and what i did) use ForScan software (free) on a laptop and a
TPS systems are truly annoying. I have a '05 Toyota Sequoia that has a TPS in the spare. Invariably, every fall when we get the first cold snap, the light will come on because the spare seems to lose a pound or 2 during the year. Easy fix would be to over-inflate the spare but then there is too much separation between the PSI of the spare and the other 4 tires and if you get a tire that is 1 or 2 PSI low, the light will come on.......
Not sure about Ford but the Toyota has a button, under the dash that lets you re-set the PSI threshold....say you wanted all your tires at 30 PSI rather than 35. You can air them all down, do a specific procedure involving the re-set button and it changes the starting PSI threshold from 35 to 30 PSI. Most systems active at something like 7 PSI below the threshold.
the only way to change or reset the Pressure setting is via the Dealer (expensive if they'll even do it) OR via ForScan (free & easy).
TPMS is another Government / EPA disaster - the thought was that under-inflated tires increase fuel consumption and increase pollution (true)...BUT....
since 2007 when the EPA mandated low tire pressure warnings (Increased cost and complexity that the consumer pays for) consumers check the pressure on their Tires significantly less and generally don't do anything until the TPMS light comes on.
TPMS warning thresholds are artificially low - so the light doesn't come on soon enough. SOOOO.....consumers still waste fuel the pollution still occurs and NOW improper tire wear increases and tires need to be replaced more frequently than when people kept an eye on things.
The system on our 2017 F350 is much improved over my wife's 2010 Miata (or my 2012 Wrangler)...neither the the Miata nor the Wrangler report pressure....just an IDIOT light - and by the time the light is on, you're already down 10 psi
ambient (fall/winter) temperature change is likely a contributor as it has probably dropped below the factory warning threshold.
i have heard that the only way to resolve it is to take the tire pressure back up to the (door tag) max drive it (to get rid of the warning) and then take the pressure back down.
the available pressure settings settings (via forscan) are:
So I need to spend over a 100 bucks to get a bluetooth device and download software and play with the computer settings on an expensive truck because of a stupid tire sensor thats 6 months old.....perfect.
So I need to spend over a 100 bucks to get a bluetooth device and download software and play with the computer settings on an expensive truck because of a stupid tire sensor thats 6 months old.....perfect.
Where'd you come up with "over 100 bucks"?
the Link I provided is for a 79 dollar diagnostic port connection device.
It's a lot cheaper than the amount of time youll waste at a dealer, and that doesnt include what they'll nail you for something you could do yourself the way you want it done.
Once you consider ALL The things you can do w/ ForScan and you might be more willing to make the investment.
This truck is built for the masses not 1 off for us....the tire pressure is set for worst case scenario (towing)....not daily commutes or running around empty.
You can fill the tires back up, put some weight in the back of the truck or just put some tape over the warning light....you make the choice
Been there done that. Nothing wrong with your sensors. You just need to do the relearn process and bring the tires up to a minimum of 60 psi. If you want to run less than that then the Forscan thingy can adjust to run lower pressures.
My tires were never below 60 psi. We had a temperature change here in Indiana and that's when the issues started. Every tire is around 65 psi yet I still get the alarm. I will try and air up and drive method for now. Might check into the Forscan for though for future reference.
Been there done that. Nothing wrong with your sensors. You just need to do the relearn process and bring the tires up to a minimum of 60 psi. If you want to run less than that then the Forscan thingy can adjust to run lower pressures.
To expand on this there are apparently 2 relearn modes. One where you actually learn a new sensor (press brake pedal once and cycle ignition on/off X# of times till it honks then activate TPMS at each corner) and one where you just reposition current sensors (ignition on engine off hazard button on/off 3x then activate TPMS)
I had an ordeal where my FL sensor was having issues. It was reading all over the place from 0 up to 92 PSI and then finally said tire pressure sensor fault. Had dealer try to fix it and they couldn't get it to relearn (assuming they did hazard button). They replaced the sensor with a new one and still couldn't get it to learn.
I finally did some reading and found out about the learning new sensor procedure and used the Ford TPMS tool (I think the whole letting air out is stupid) to activate each corner and it worked just fine.
one where you just reposition current sensors (ignition on engine off hazard button on/off 3x then activate TPMS)
Question: I did the above, then it asked me to adjust/or something with the left right. I didn't know what to do at that point. I tried hitting ok on the steering wheel, but that just made the message go away. Not sure what to do at that point.
one where you just reposition current sensors (ignition on engine off hazard button on/off 3x then activate TPMS)
Question: I did the above, then it asked me to adjust/or something with the left right. I didn't know what to do at that point. I tried hitting ok on the steering wheel, but that just made the message go away. Not sure what to do at that point.
Once it says front left, you will need to activate the front left sensor either by letting air out of the front left tire until it honks or by using a TPMS trigger tool. Once activated the truck will honk and tell you to do the front right, etc.
My tire shop could not, after no less than 3 trips, relearn a second batch of TPMS for my snow tires. The truck just won't recognize them. It's been a bit ridiculous, and I understand this is an issue with the '17 trucks at large. Ford could not give the shop a straight answer, and we went through 5 different sets of OEM sensors provided to us by the dealership parts department.
I have the handheld button that you can use in place of deflating and the shop has their own tool supplied by Ford, but neither has worked. I'm taking the truck to the Ford dealership tomorrow so they can figure this out, as my tire shop literally gave up and said "just take it there and we'll pay the bill."
