Remove TPMS on 08 F250?

[sporacer]

Originally Posted by Scott_M

The aftermarket tires I have on my truck are rated at 50 PSI. The Stock tires were rated at 65 PSI in the front and 80 PSI in the rear according to the sticker on the door jam. For the short period I ran the truck with stock tires at the indicated pressure I never had the low pressure light come on. As soon as I changed to the aftermarket tires rated at 50 PSI, I can't get the low pressure light to go off, and I also used the tool that comes with the truck to perform the relearn procedure. From what I have read and have been told by the dealers, the relearn procedure is only performed to get the front/rear tire orientation correct after a tire rotation. In my situation with 50PSI rated tires the relearn procedure will not keep the low pressure light from coming on.

I see that you have aftermarket rims on your truck. It may be possible that you damaged a sensor doing the transfer. Did you scan it for codes?
We thought the same thing that it was only for tire positioning but it worked to fix the psi lowering on the rear. I didnt want to run 80 in the rear.Just no need for it when running unloaded.
Are you using a e load tire that has a 50 psi Max?

[Scott_M]

Originally Posted by sporacer

I see that you have aftermarket rims on your truck. It may be possible that you damaged a sensor doing the transfer. Did you scan it for codes?
We thought the same thing that it was only for tire positioning but it worked to fix the psi lowering on the rear. I didnt want to run 80 in the rear.Just no need for it when running unloaded.
Are you using a e load tire that has a 50 psi Max?

No codes showing anything is bad. I also tried the same thing with the stock tires. With 80 PSI in the rear and no load, the ride would beat you to death. I let the pressure down to 65 PSI in the rear and did the relearn procedure and still got the low pressure light. Unfortunately the tires I have on the truck are D load rated, but they are very close to the stock E rated tire load rating. I am not too worried about the D rated tires because I am not pulling any large fifth wheel trailers.

[2008 SuperDuty]

To carry whatever your desired air pressure without warning ligts. Inflate all tires to desired air pressure. With all doors closed as to not have door ajar message and chimes, "carefully" follow all steps mentioned in manual (the slightest error/oversight will require a restart). When "train LF tire" appears, place the remote on the LF tire (do not touch rim) opposite the stem and aim arrow toward stem. Press and release (do not hold) button. Red light will appear for about 5 seconds and horn will chirp. Quickly repeat same procedure for RF, RR, & LR. Message center will say: "training complete"

[Scott_M]

Originally Posted by 2008 SuperDuty

To carry whatever your desired air pressure without warning ligts. Inflate all tires to desired air pressure. With all doors closed as to not have door ajar message and chimes, "carefully" follow all steps mentioned in manual (the slightest error/oversight will require a restart). When "train LF tire" appears, place the remote on the LF tire (do not touch rim) opposite the stem and aim arrow toward stem. Press and release (do not hold) button. Red light will appear for about 5 seconds and horn will chirp. Quickly repeat same procedure for RF, RR, & LR. Message center will say: "training complete"

I have already done this procedure just as it states in the owners manual. It was performed while a Ford technician watched, and stated that it was performed correctly. The bottom line is that the tires that I am running have a max pressure rating of 50 PSI. According to the Ford tech that watched me do the retrain procedure, 50 PSI is just too low to retrain the TPMS in order to get the light to go off.

[2008 SuperDuty]

My tires have a max inflation of 80 lbs cold. I inflated my tires to 45 lbs, followed the manual, placed the remote as previously described on all tires in the position and order previously described, and the message center displayed "training complete" I'm now running 45 lbs without any low pressure warning light. It took me about 3 times to get the message center to display "train LF tire". So my only suggestion is to keep trying...it does work!

[Scott_M]

Originally Posted by 2008 SuperDuty

My tires have a max inflation of 80 lbs cold. I inflated my tires to 45 lbs, followed the manual, placed the remote as previously described on all tires in the position and order previously described, and the message center displayed "training complete" I'm now running 45 lbs without any low pressure warning light. It took me about 3 times to get the message center to display "train LF tire". So my only suggestion is to keep trying...it does work!

I decided I would go ahead and try it again. I first checked all of the tires and they were all at 52 PSI. I put the TPMS into the training mode according to the manual. I am getting pretty good at getting the TPMS into the training mode as many times as I have done it by now. The message center displayed all the correct info. I trained each wheel according to what the message center displayed. I got a short chirp from the horn after each wheel was trained, and after the last wheel was trained the message display said "training complete". I am still getting the low warning light.

[seriousinstalls]

I have heard of people putting both sensors for the rear tires in the spare tire and calibrating them. I have heard this works but have never done it myself!! You keep the front two in the front tires and the rear two in the spare tire which will allow you to put 80 PSI in the spare tire. However, to stay legal you can buy an aftermarket system such as hella TPMS kit which comes with its own stand alone module and you still have a working TPMS system. The dealers should have no problem doing that for you.

[Scott_M]

Originally Posted by seriousinstalls

I have heard of people putting both sensors for the rear tires in the spare tire and calibrating them. I have heard this works but have never done it myself!! You keep the front two in the front tires and the rear two in the spare tire which will allow you to put 80 PSI in the spare tire. However, to stay legal you can buy an aftermarket system such as hella TPMS kit which comes with its own stand alone module and you still have a working TPMS system. The dealers should have no problem doing that for you.

I wonder if it would work if you put all four sensors in the spare tire? One other thing to consider is that the owners manual states that after the sensors have been retrained you might have to drive the vehicle for a few minutes to get the low pressure warning to clear. With that being said, I wonder if the sensors know if they are rotating. The reason I ask this is because of the day I had the aftermarket wheels and tires put on. I had the sensors taken out of the stock wheels and put in the aftermarket wheels. After all of the sensors were mounted in the new aftermarket wheels and tires, the stock wheels and tires went back on the truck so I could drive it to the shop to have the lift installed. The new aftermarket wheels and tires that have the pressure sensors mounted in them went in the bed of the truck for the drive to the 4x4 shop. On the way to the shop I got a "pressure sensor malfunction" and "low tire pressure" warning on the message center. After the lift was put on along with the new wheels and tires that have the sensors mounted in them, the "pressure sensor malfunction" warning went away. This is why I am curious to know if the sensors have to be rotating in order to keep from getting the "pressure sensor malfunction" warning. I hope all of this makes sense. I wish there was just a way to eliminate all of this TPMS crap.

[sporacer]

the sensors know where they are on the vehicle. Thats why you train in order LF,Rf,RR,LR. You must have a damaged sensor because I have had no problems with retrain at lower pressures.

[Scott_M]

Originally Posted by sporacer

the sensors know where they are on the vehicle. Thats why you train in order LF,Rf,RR,LR. You must have a damaged sensor because I have had no problems with retrain at lower pressures.

The retrain procedure works just like it is supposed to according to the owners manual. No codes showing anything is bad according to the dealer.