ballistic

i had my wheels TPMS recalibrated yesterday because a fault msg appeared a couple weeks ago. I topped up the air to 35psi and the light stayed on. These tires lose several psi per week! the dealer did this for free... took him 2 mins. ANYWAY.., my tire air pressures were low when i took it in.. 2 wheels were down 5-7psi. I didnt notice til i got home.
Q: when you calibrate TPMS do you have to first have the correct air pressure in the tire? or does the sensors already know the correct pressure?

RahX

The system should be preset for your truck already. All they probably did was update the reciever for a new sensor or a different sensor installed. The sensor does not care what vehicle it is in, it just reports serial #/pressure/temp/battery life and maybe a few other things. The reciever is the part that does everything with the info. You should see what the code is, you might have a bad or damaged sensor. Let us know.

sergiocarlo

Hi there guys. I have a F150 FX4 2010. Bought new rims and tires from Tirerack. Bought the sensors and all.. they work fine.. but I'm having the problem where the 17" tires that came with the truck needed to be inflated at 55psi and 60psi... the new tires can't go above 40psi... is the PVC pressure tube THE ONLY WAY? No one knows of a software to hack into the F150's CPU?

When some of you say "RECALIBRATE" the sensors... does that mean that I can inflate to 40psi... RECALIBRATE and the system thinks that it has the 55psi?

I really do think that SOMEONE has done it.. if they can hack an iPad in a day... someone must have done this. I'm talking to a hacker friend of mine to see if we could take the "RECALIBRATION" tool and do something to it, but i do need that model number of that tool... I'll will keep trying to get a correct solution for this.. in the mean time I ask for your help.

If i do the PVC tube... could I inflate to 57psi without having it explode?

Thanks guys.

Sergio Carlo
Dominican Republic
www.youtube.com/sergiocarlo

RahX

The module should be calibrated for your truck already, tires and sensors shouldn't make a difference. All the sensors do is report pressure, temp, battery life, ID # etc. The module is what turns the light on and stuff. When you get the sensors programmed, you tell the module to listen to the 4 or 5 sensors that you have on your truck and not every vehicle on the road. Spend the money and have a Ford dealership program the new sensors in.