I have a 2009 F150 that always displays a "tire pressure sensor fault" on the cluster. I've had all 4 sensors replaced and reset, and I do not have one on the spare. The system tells me when a particular tire is low.. left front right rear etc but otherwise says it's broken. It's the weirdest thing. Does anyone know how to A: just turn the damned thing off (I know its *******, don't really care) or B: what part I need to replace.
When the sensors were replaced and they did a reset. They should have told you the problem. They should have told you up front, instead of charging you for sensors. The BCM isn't reading the signal from the sensors. Find another place to go. I hate point and fix mechanics. Sensor fault? replace all the sensors... It didn't say one tire, it says sensor fault. Have the codes read. They should have done this. To get rid of the message on the DIC, you have to unplug it. But this gets rid of all messages you would get. Pull the IP and take it apart to unplug.
Testimonial: "I went to both NTB and Firestone for tires since I had the problem, and both shops couldn't explain the problem. The first place, Firestone said I had one sensor bad from fix-a-flat (not by me but previous owner) and NTB actually changed the sensors for free just out of sheer curiosity after I explained the problem. They actually swapped my tires with those of an employee and they read just fine on his F150. (I was there for HOURS with them trying to search the problem down lol) They said they'd never came across anything like that.. and the fact that it still TELLS me when each tire is low completely blew them away. I'm thinking there might be something in the dash messed up? or maybe something under the hood? I just can't find what part those individual sensors report to to check it. Any ideas on that one?"
At least they tried..TPMS goes to the body control module(BCM). Only thing I can think of is the BCM is bad, lost communications(it is wireless) Or you have an interference from something. Interference could be from the condenser for the radio(bad), after market radio, or aftermarket remote start/ alarm.
That's the little square black box behind the back seat, right? If not... where is it? lol and if I unplug it... really bad things will happen.. correct?
BCM's have 3 or 4 plugs in them. On Fords they are usually called GEM's. they are incorporated with the fuse panel. Many more plugs. And yes, you can't unplug them. Your truck will go to toxic shock and die. Some times it will cost to even plug them in and get them running again. Towing and a reprogram. I really can't believe they didn't pull codes. I always do this first. I'm not really a mechanic.I just fix things. cars happen to be one of them.
They had the OBDII code thingy plugged in but it read normal till they deflated tires to make it go apeshit and say they were low. The only other problem at all with the truck is what I feel is a pretty fast flash on the turn signals. (no lights are out but it blinks like one is) I know that is probably controlled by the GEM.. I know NOTHING about ford vehicles lol, I've only ever owned Chevy (thats why BCM didnt work under google search) I know those things from the ground up, but this is so similarly different and confusing it's maddening! What happened to paperclipping leads on things that annoyed you?! lol.
Nah, If the Gem read low tires, all them, it works right. Flashing fast is in the hazard module. Yeah, it has one. Live with the fast blinking till it dies. I would suspect the logic chip (or support for it) in the IP is bad for the TPMS. Paper clips won't fix this..
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