Ford TPMS

John F

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Jan 22, 2021, 11:28:11 PM1/22/21

to rtl_433

Trying to read a 2020 Ford TPMS with no luck. Sensor operates at 315 Mhz.

rtl_433 -f 315 -v

Wondering if the ford support is for the older ford sensors?

--John

John D. Peterson

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Jan 23, 2021, 1:02:01 AM1/23/21

to rtl_433

Hello John,

I think your command needs an M in it. I tested it just now and -f 315 tried to tune to 315 Hz.

Try this one and see if it works:

rtl_433 -f 315M -v

--
John D. Peterson/w4jdp
http://www.alabamarailfan.com

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Greg Troxel

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Jan 23, 2021, 8:57:25 AM1/23/21

to John F, rtl_433

Good catch by John on M.

I haven't run this in a while, but last I knew one could receive the
bits but the pressure/temp wasn't decoded, at least from ~10 year old
Ford sensors.

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Corey Cap

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Jan 23, 2021, 6:23:22 PM1/23/21

to rtl_433

I was having a problem with Ford and a few other sensors decoding and at 315mhz using my SDR. Though, I had no problem when I used my Raspberry Pi Zero W. I was able to pick up 315mhz on the Pi Zero without even attaching a wire to Pi. Everything else worked on the SDR like 433.9200 mhz, 915M but 315mhz was an issue. Its weird I know haha.

Not sure if anyone has mentioned this but, I found that Kismet within the GUI, if you have RTL433 install on the same machine, Kismet recognizes RTL433 as its own datasource and will populate LOTS of awesome info that I couldnt decode via RTL433. Like my whole neighborhoods Electric and water meters and the detail provided through Kismet of all of the devices identified is too cool.

John F

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Jan 25, 2021, 1:39:04 PM1/25/21

to rtl_433

So I had rtl_433 running sitting on my desk and it started picking up schrader TPMS sensors. I was convinced it was my friends jeep parked outside....after doing a test driving in it, it indded was his jeep. It picks them up and reports back the propper PSI and temp.

I dont actually need rtl_433 to read the 20202 ford......My application is for a trailer, so i can use any TPMS sensors i want, so, after seeing the schrader ones on the jeep worked, i went and ordered the schrader ones. $25 each, but i know they will work in rtl_433, so i went with those. I also had to order the programing tool, which i found a deal on at $170. These sensors are universal so they can be set to 433, 315, and some other frequency i havent heard of...thats why a special programmer is required.

I will post a thread on success once i get them working so everyone whos setting up a TPMS system using rtl_433 knows defiantly which ones to order.

--John

John F

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Jan 25, 2021, 4:35:21 PM1/25/21

to rtl_433

While waiting for the schrader sensors to arrive, actually got another sensor in the mail today that i had ordered Ford:

4L2T-1A150-BB or 4L2Z-1A150-BB (Same ones)

Detects and works perfectly at 433mhz, and displays in PSI. No programer, no activating - just put it in a pressure tank and it worked. Interesting.

--John

John F

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Mar 10, 2021, 1:22:18 PM3/10/21

to rtl_433

Thank you so much! So silly i was missing that. I can now read the ford sensors good. However, for any project i highly recomend against using them. The schrader EZ sensors are so much easier to work with. They also use a rubber head, which makes installing them less prone to leaks. They can be activated using a cheap "tech 200" programing tool. You can activate them in 315 OR 433 mhz, and have them emulate so many vehicles.

--John