Any update on a Trailer TMPS system?

[{tpc}]

Gotcha! I don't remember inspecting the black box side of the cable, just the side at the 12pin plug.

The way nearly all the TPMS systems you can get aftermarket work is they are each a BLE (bluetooth low energy) transmitter that does simple advertising at a regular interval. Some receiver has to be listening on that channel and know how to decode it. A lot of them come with a little LCD monitor that knows the exact frequencies and channels. Most come with 4 sensors and can only cover the range/distance of a standard car. Then there are the ones with a repeater and come with 6 sensors, for trailer/RV use. The repeater collates the tires then sends to the display (or receiver) on a different channel so there are 2 short hops rather than one long hop. The reason is to cover a distance that far the power level (dBm) you'd have to transmit is exponentially more and would drain the coin cell so quickly it would be impractical.

Anyway the sensor networks in these cars seemed to be migrating from wired CAN bus (simple serial protocal) to wireless where they can communicate to some wireless-to-CAN bus bridge to appear legacy compatible. THAT's why I assumed all our devices plugging into the 12pin trailer connector would be going wireless since it only provided the 5V power and ground. If they are going back to the superduty wired versions of the TPMS and camera then that seems to be walking backward tech-wise and now we have to retro-fit our plugs.

I agree. The diagrams I found were from a superduty forum so that is likely why the can bus connections are there. But until someone spends the money to look at the 2022 diagrams, and/or orders a standalone tpms setup and can post how many pins are on that box/cable etc. it’s going to be hard to know for sure.

What I do feel I know for sure (or will once I can confirm connections truck side) is that the 2 wires most of us have on the 12 way are for the yaw sensor and the yaw sensor doesn’t need power and ground. That at least seems to be consistent across all the diagrams/pin outs I have seen this far.

If the tpms doesn’t need canbus I think it will be fairly easy to get power and ground into the 12 way, and then pigtail off the yaw sensor cable. The hardest part at that point would be removal tools for the pins on both sides. But they may just cpa clips holding them in some cases.

I am stumped why ford would populate all the pins on the 12 way even though only 2 of them are wired. Seems like a waste of money and that’s something they don’t like to do.

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[BLoflin]

@{tpc} and @daemonic3 ,

Not sure if you saw my post on Fri.

I have a newly built 2022 F-150.

That 12 pin connector (ON THE TRUCK SIDE AS BUILT) is now populated with 8 wires (NOT just 2 as the 2021 F150's had).

As long as we are all speculating, I BELIEVE (don't know for sure) we had a left hand/right hand not talking situation in Ford design.

I believe part of Ford design was deciding to allow additional towing support items (like trailer cam and trailer tpms, coming from the Super Dutys), and in the middle of the mix was the yaw sensor deal (sticker and/or sensor), but the net result was the cable team (wiring harness) didn't get the memo and only released with Power & Gnd to that plug. The Accessory team had the Cam and TPMS listed in their catalog, then had to drop it from the F150 as they don't work without the connections.

Now in 2022 they have the right wiring harness (assuming 8 wires is the right amount as is in mine.

 

[daemonic3]

@{tpc} and @daemonic3 ,

Not sure if you saw my post on Fri.

I have a newly built 2022 F-150.

That 12 pin connector (ON THE TRUCK SIDE AS BUILT) is now populated with 8 wires (NOT just 2 as the 2021 F150's had).

As long as we are all speculating, I BELIEVE (don't know for sure) we had a left hand/right hand not talking situation in Ford design.

I believe part of Ford design was deciding to allow additional towing support items (like trailer cam and trailer tpms, coming from the Super Dutys), and in the middle of the mix was the yaw sensor deal (sticker and/or sensor), but the net result was the cable team (wiring harness) didn't get the memo and only released with Power & Gnd to that plug. The Accessory team had the Cam and TPMS listed in their catalog, then had to drop it from the F150 as they don't work without the connections.

Now in 2022 they have the right wiring harness (assuming 8 wires is the right amount as is in mine.

This explanation is 100% believable now that I see what you mean about your '22 truck-side of the connector. Yeesh

 

[BLoflin]

The wire harness I’m using now is ml3z-13a576-tfa and the camera tpms kit is LC3Z1A189A
I hooked up the tpms and camera and tpms was immediately detected, tire PSI showed 0 because I don’t have the sensors installed in any tires right now. Everything looks to be in order functionality-wise. Reverse sensors working as well.

GChurch, how many wires are in the F250 wiring harness you repurposed (ml3z-13a576-tfa)?

My 2022 F150 has 8 wires in the truck side of the plug (a change from the 2021 builds that only had 2 wires).

I'm trying to understand if my 2022 F150 will now support the Trailer Cam and Trailer TPMS AS IT WAS BUILT the way you made your 2021 F150 by having to replace the harness.

 

[{tpc}]

@{tpc} and @daemonic3 ,

Not sure if you saw my post on Fri.

I have a newly built 2022 F-150.

That 12 pin connector (ON THE TRUCK SIDE AS BUILT) is now populated with 8 wires (NOT just 2 as the 2021 F150's had).

As long as we are all speculating, I BELIEVE (don't know for sure) we had a left hand/right hand not talking situation in Ford design.

I believe part of Ford design was deciding to allow additional towing support items (like trailer cam and trailer tpms, coming from the Super Dutys), and in the middle of the mix was the yaw sensor deal (sticker and/or sensor), but the net result was the cable team (wiring harness) didn't get the memo and only released with Power & Gnd to that plug. The Accessory team had the Cam and TPMS listed in their catalog, then had to drop it from the F150 as they don't work without the connections.

Now in 2022 they have the right wiring harness (assuming 8 wires is the right amount as is in mine.

Once I get a chance to look and what pins the wire harness goes to, I think that will offer some clarity to the 2 pin configuration.

I don’t necessarily believe this is power and ground. Unless your saying to me that yaw rate feed and yaw rate return are just another name for power and ground. And maybe that is all it is, because I really don’t know that much about that sensor. Does this little tiny sensor work wirelessly somehow? Doesn’t make sense to me.

My issue is that the wire on the truck side is color coded to the same color code as yaw rate feed and yaw rate return. I just don’t think ford would just say “hey keep those same wires in the same spot with the same color but plug them into power”.

I guess anything is possible. Even if they were hooked to power and ground, what the heck would you connect to what appear to be a 24 gauge wire. Nothing with any possible current draw.

I will say that my theory is the 2 pin is yaw sensor only, simply a carryover from job 1 to job 2 2022, and fully populated would be for tpms/camera/yaw. That at least makes sense. Even if they get the wrong harness installed, I would be very surprised that they would use more than one 2 pin harness that has 2 different purposes.

I know you all just want me to crawl under my truck in the snow and pull the connector right? Lol

 

[daemonic3]

Once I get a chance to look and what pins the wire harness goes to, I think that will offer some clarity to the 2 pin configuration.

I don’t necessarily believe this is power and ground. Unless your saying to me that yaw rate feed and yaw rate return are just another name for power and ground. And maybe that is all it is, because I really don’t know that much about that sensor. Does this little tiny sensor work wirelessly somehow? Doesn’t make sense to me.

My issue is that the wire on the truck side is color coded to the same color code as yaw rate feed and yaw rate return. I just don’t think ford would just say “hey keep those same wires in the same spot with the same color but plug them into power”.

I guess anything is possible. Even if they were hooked to power and ground, what the heck would you connect to what appear to be a 24 gauge wire. Nothing with any possible current draw.

I will say that my theory is the 2 pin is yaw sensor only, simply a carryover from job 1 to job 2 2022, and fully populated would be for tpms/camera/yaw. That at least makes sense. Even if they get the wrong harness installed, I would be very surprised that they would use more than one 2 pin harness that has 2 different purposes.

I know you all just want me to crawl under my truck in the snow and pull the connector right? Lol

I was basing my assumption about power/gnd on how yaw (or gyro) sensors work. The ones I'm aware of are on their own IC's which would need power to run. And they output a signal (or signals) to indicate changes in the resonant frequency of the crystal (coriolis effect). MAYBE there is a way to just provide an oscillation frequency on the "feed" and monitor the "return" for change in that frequency with 2 wires?? That feels crazy to me but maybe it is true! Just feels like there would be so much noise on a long pair of wires like that but maybe it just works.

 

[don.mullins]

Sounds like getting the ‘22 F150 harness might be the right option for us ‘21 owners.

 

[SomebodyInGNV]

OK, so I received the kit I bought on ebay. Unfortunately, it's only the camera. What I wanted was the TPMS sensors. It was a good-faith error by the seller who never opened the box when he bought it in 2018. We worked out a settlement. The camera kit is back up on ebay here, if someone's interested.

The harness for the truck includes the connector for the TPMS. A picture is below for comparison to the yaw connector 12-pin plug and to the wires on the back of the truck 12-pin socket, for those who have an equipped truck. It may be useful to determine which wires go where.

The part description on Ford's site says this is compatible for 2017-2022 SuperDuty. I suspect it works the same for F150s but it lacks the yaw sensor connector. For SuperDuty, it requires the "ultimate tow package" (or whatever that is) and is "incompatible with Pro Backup Assist". I believe the latter disclaimer is due to not having the yaw sensor. I suspect it will work fine for TPMS and camera purposes.

The camera seems of lower quality than the wireless Furrion I already have. There's no evidence of IR lighting, so I don't know if it will work in the dark, as mine does.

 

[SomebodyInGNV]

Sounds like getting the ‘22 F150 harness might be the right option for us ‘21 owners.

From what I've found searching parts online, the '22 F150 trailer kit is available only with all 3 parts, and is expensive. If you want only TPMS and/or camera, I'm thinking the SuperDuty kits may be compatible. That assumes that the stickers work for backup assist, if you want that.

 

[don.mullins]

From what I've found searching parts online, the '22 F150 trailer kit is available only with all 3 parts, and is expensive. If you want only TPMS and/or camera, I'm thinking the SuperDuty kits may be compatible. That assumes that the stickers work for backup assist, if you want that.

My current thought is to get the following (I already have the Yaw sensor):

• The truck wiring harness from the ‘22 F150 (with the additional wires)

And the following pieces from:
https://accessories.ford.com/produc...railer-sensor-kit-w-pro-trailer-backup-assist

• TPMS module
• Trailer wiring harness (the site states it works with an existing Yaw sensor)
• Four TPMS sensors for the tires.

 

[SomebodyInGNV]

My current thought is to get the following (I already have the Yaw sensor):

• The truck wiring harness from the ‘22 F150 (with the additional wires)

And the following pieces from:
https://accessories.ford.com/produc...railer-sensor-kit-w-pro-trailer-backup-assist

• TPMS module
• Trailer wiring harness (the site states it works with an existing Yaw sensor)
• Four TPMS sensors for the tires.

That was my plan for my future XLT HDPP but it didn't work out that way. Have you been able to confirm that the SuperDuty TPMS sensor kit, alone, is compatible with the F150? I suspect that it is but Ford reference material may say that it isn't, only because it doesn't include the yaw sensor connections. I hope they market the components separately for F150s like they do for SuperDutys

Edit: does anyone know if the built-in TPMS has temp and rapid-change alarms like TST systems do?

 

[jperry5835]

has anyone been able to lookup the 2022 truck harness part number yet? Everything I see online only goes to 2021.

 

[GChurch]

Great work!

So it sounds like it was just plug-and-play with no FORScan changes needed - is that correct?

That’s correct! No FORScan modifications required at all. Everything is plug and play. Your idea makes sense to me and is what I am planning on doing for my boat trailer where the camera really doesn’t make sense or help much.

 

[GChurch]

Wow. does your setup do it all? Specifically, trailer cam, tpms, and the yaw sensor.

It does support it all, but I am only using camera and tpms + sticker because my truck didn’t come with a yaw sensor. The trailer harness that came with in the camera and tpms kit has a pigtail for the yaw sensor so I will probably add it eventually. Sticker is ok for now

 

[BLoflin]

Once I get a chance to look and what pins the wire harness goes to, I think that will offer some clarity to the 2 pin configuration.

I don’t necessarily believe this is power and ground. Unless your saying to me that yaw rate feed and yaw rate return are just another name for power and ground. And maybe that is all it is, because I really don’t know that much about that sensor. Does this little tiny sensor work wirelessly somehow? Doesn’t make sense to me.

My issue is that the wire on the truck side is color coded to the same color code as yaw rate feed and yaw rate return. I just don’t think ford would just say “hey keep those same wires in the same spot with the same color but plug them into power”.

I guess anything is possible. Even if they were hooked to power and ground, what the heck would you connect to what appear to be a 24 gauge wire. Nothing with any possible current draw.

I will say that my theory is the 2 pin is yaw sensor only, simply a carryover from job 1 to job 2 2022, and fully populated would be for tpms/camera/yaw. That at least makes sense. Even if they get the wrong harness installed, I would be very surprised that they would use more than one 2 pin harness that has 2 different purposes.

I know you all just want me to crawl under my truck in the snow and pull the connector right? Lol

Sorry TPC, I don't know what the 2 pins are, I just assumed Pwr&Gnd. So don't go on my assumption.

My main point was the 2021 builds had 2 pins wired to the truck side connector and now my 2022 has 8 pins wired.

Still waiting on @GChurch to verify the cable he used (from F250) for his 2021 F150 that worked for him, also JUST has 8 pins wired (on the truck side). Unless I missed his response.

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