Quote:
Originally Posted by pdaniel
Interesting conversation concerning Ford TPMS. My 2016 Ram 3500 indicates the pressure in each tire rather than displaying a code. A tire rotation only needs a couple of miles for the pressures to reset on the display.
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Ford TPMS does not indicate individual pressures, but like the RAM system, it is "supposed to reset itself automatically" after tire rotation. Some people either don't want to wait until the system resets or they have the tool and want to justify the purchase (me). The only time I use the tool without letting the automatic reset do its thing is in the spring/fall when I change from summer tires to winter tires. I have 2 sets of wheels and two sets of TPMS valve stems, so I just reset them when I change the wheels rather than fidget with the auto system which occasionally won't recognize a different frequency valve stem and won't reset. So I just do it with the tool to save time and frustration, especially if it's already cold and there's ice on the roads. I don't like playing around with tires when the wheel wells are filled with sandy, icy CRUD.....
In those cases, it's a matter of doing the following:
1. Press and release the brake pedal
2. Turn the ignition on/off 3 times ending in on.
3. The horn will sound and instrument panel will read, "TRAIN LF TIRE"
4. Go to the LF tire, hold the tool next to the valve stem and press/release the button. Horn will sound once within 6 seconds.
5. Move to RF tire, hold tool next to valve stem and repeat. Horn will sound within 6 seconds.
6. Move to RR tire, repeat and horn will sound within 6 seconds,
7. Move to LR tire, repeat and horn will sound within 6 seconds.
8. Process complete.
Note: There is a 2 minute timer in the CPU. If there is no activity for 2 minutes, the system will reset and stop the training process and it must be initiated again with the ignition switch process. As long as there is less than 2 minutes between each valve stem, the system will stay in "train mode"...
FlyingAroundRV,
If you think setting up the TPMS train mode is "strange switchology" wait until you have to get into the "CPU read only mode" or the "CPU test mode"... That's when you have to swallow while your left index/middle finger are crossed or the system will make an incorrect entry....
Essentially, just like there's two or three ways to control every dash feature (turn the knob/flip the switch, or press the center touch screen logo or press the voice activate button and tell the CPU to turn on/off/adjust the feature) there are several ways to enter the CPU features. In the shop, the mechanic (now called a technician) plugs in the ROTUNDA laptop and enters the program, in the field, we use the ignition switch, brake pedal, 4 way flasher method and on some (not all) OBD testers there are procedures to enter a few of the CPU programs.
Complicated ??? Yeah, sure is, but it's nice to have a backup means to back up the backup method which is what Ford did with the system.....