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TPMS (TIS) sensors for trailer (SOLVED - see 1st post) aka TTPMS - Trailer TPMS

Brutal_HO said:
Unless you got a KAOdTECH style bypass cable, you got the wrong one. If you have a 12+8 "y-cable" that's for 5th gen 1500 trucks.

You're mixing metaphors so to speak. We don't plug into the BCM (which is not located behind the dash cluster), we bypass the SGM (which is). You do that by plugging a cable into the CAN-C and CAN-IHS bus blocks that are on the driver side kick panel above the emergency brake and can be seen behind the headlight switch bezel ounce you pull it.

M

Thread 'AlfaOBD'

Has anyone played with AlfaOBD on their 2019 HD's yet? I'm curious if anything is accessible to "change" and if it just works. There is lots of different info out there on other forums, but i haven't found anything in regards to the 2019's.

EDIT: AlfaOBD does work, here is the what is needed to use it on 2019 and newer HD Rams:
- The Android app from google play store, or windows download from AlfaOBD.com. (Windows version strongly recommended) (AlfaOBD is Windows/Android only)
- A Bluetooth interface such as OBDLink MX+ or OBDLink LX (cheaper than the MX+ if you don't need iOS support...
  • Like
Click to expand...
I have the 2024 Ram 3500 dually.
 
MrRogue1 said:
It’s the cable Jimmy sent me a link to get off amazon. Wrong ?!?

What is this cable for then ?
Is the OBD plug in “vLinker MC+” even correct ?
Click to expand...
Just to clarify:
It’s not the “wrong” cable. It’s just not the “preferred” cable.
When I made this recommendation to you back in February, the preferred kaodtech cable was out of stock for a while, and I couldn’t source the parts to build one like this. So, I made the recommendation for the red Amazon one.
It still works to bypass the gateway, just like the other bypasses. The only thing that makes it not the preferred cable for Heavy Duty Rams is because you have to plug it in behind the instrument cluster. There are plenty of videos out there how to do this.

If you have an iPhone, but no laptop, then get the JScan app on your iPhone, instead of using alfaobd.

With everything that you currently have (Amazon bypass, vlinker MC+, and an iPhone), you can have this feature programmed, and done and over with in an hour.
 
Jimmy07 said:
Just to clarify:
It’s not the “wrong” cable. It’s just not the “preferred” cable.
When I made this recommendation to you back in February, the preferred kaodtech cable was out of stock for a while, and I couldn’t source the parts to build one like this. So, I made the recommendation for the red Amazon one.
It still works to bypass the gateway, just like the other bypasses. The only thing that makes it not the preferred cable for Heavy Duty Rams is because you have to plug it in behind the instrument cluster. There are plenty of videos out there how to do this.

If you have an iPhone, but no laptop, then get the JScan app on your iPhone, instead of using alfaobd.

With everything that you currently have (Amazon bypass, vlinker MC+, and an iPhone), you can have this feature programmed, and done and over with in an hour.
Click to expand...
I did order the second cable.(kaodtech)
It should be here in a couple days.

I also already have a cable that is made to plug-in to the unit behind the dash cluster and drop that connection down around the steering wheel so you just have to get down on the floorboard and look up and there it is you don’t ever have to pull the cluster out again Everything can be done from there.
I forgot what it’s called, but I did buy that from infotainment. So once that’s installed, I’ll never have to go back in there again. For whatever reason, I just don’t like the idea of pulling that basil out and unbolting and bringing out the cluster.
So I’ll avoid that after the first time in and out.

I have not looked at the J scan
What does it cost? Does anybody know? Is it a one time use or is it something you have to sign up for monthly?
 
MrRogue1 said:
I did order the second cable.(kaodtech)
It should be here in a couple days.

I also already have a cable that is made to plug-in to the unit behind the dash cluster and drop that connection down around the steering wheel so you just have to get down on the floorboard and look up and there it is you don’t ever have to pull the cluster out again Everything can be done from there.
I forgot what it’s called, but I did buy that from infotainment. So once that’s installed, I’ll never have to go back in there again. For whatever reason, I just don’t like the idea of pulling that basil out and unbolting and bringing out the cluster.
So I’ll avoid that after the first time in and out.

I have not looked at the J scan
What does it cost? Does anybody know? Is it a one time use or is it something you have to sign up for monthly?
Click to expand...
The problem with the cable that requires pulling the cluster is that you'll have to do it again if you take the truck to the dealership for work, and then again when you get it back.
 
MrRogue1 said:
I did order the second cable.(kaodtech)
It should be here in a couple days.

I also already have a cable that is made to plug-in to the unit behind the dash cluster and drop that connection down around the steering wheel so you just have to get down on the floorboard and look up and there it is you don’t ever have to pull the cluster out again Everything can be done from there.
I forgot what it’s called, but I did buy that from infotainment. So once that’s installed, I’ll never have to go back in there again. For whatever reason, I just don’t like the idea of pulling that basil out and unbolting and bringing out the cluster.
So I’ll avoid that after the first time in and out.

I have not looked at the J scan
What does it cost? Does anybody know? Is it a one time use or is it something you have to sign up for monthly?
Click to expand...

JScan is one time purchase per VIN. I paid $24 in 2023 for android.
 
MrRogue1 said:
I also already have a cable that is made to plug-in to the unit behind the dash cluster and drop that connection down around the steering wheel so you just have to get down on the floorboard and look up and there it is you don’t ever have to pull the cluster out again Everything can be done from there.
I forgot what it’s called, but I did buy that from infotainment
Click to expand...
So now you’ll have all three types of bypasses, when only one is needed. You already had the Amazon one initially, and this all could have been done long ago with that one…
 
jsalbre said:
The problem with the cable that requires pulling the cluster is that you'll have to do it again if you take the truck to the dealership for work, and then again when you get it back.
Click to expand...
Shouldn’t need to do that cluster removal more then once. The cable I have is for relocating that access point to down around the steering column so no one has to go back behind the cluster again.
It just changes the access location to easier accessible.
 
Trailer TPMS install
I Installed all the parts from post one in my 2024 Ram 3500 and Its populated in screen and setup is there as supposed to in the screen.
My question is i have two bags of sensors out of two of my other trucks, wondering if either will work or if both kits will work as i need 6 sensors in total for one trailer.
2021 ram 1500 came with 68433188aa-will they work with 2024?
2025 ram 1500 came with 68600218aa-will they work with 2024?
 
Last edited:
ghaynes754 said:
Has anyone bought/installed the tire pressure sensors on a towed trailer that can be viewed on the driver information center after being configured in the UConnect? Specifically for the 3500. I am looking for the part number for the sensor.

I've tried a couple of dealers and yesterday chatted and then emailed Mopar support. Chat referred me to email. Email sent me a totally useless reply. "After doing some research, I found that I only have part information for those that come equipped with a particular vehicle or that are compatible with a vehicle. I would suggest that you speak with an authorized Ram dealer for the part number for the Tire Pressure Sensors that would be used by the trailer towed by your truck. "

This being my first non GM truck after 40 years I am surprised that FCA support doesn't have part numbers. Seems like a black hole.


Mod [Brutal_HO] Edit: OP hasn't been seen in a while so I'm posting a summary update here regarding the TTPMS (Trailer TPMS):

Through diligence and hard work on the part of several members, the parts and process to add TTPMS has been discovered. There are several good summaries and instructions posted throughout the thread that I will attempt to cover below.

The parts required, discovered by several contributors and posted throughout the thread, was initially summarized by @thestuarts HERE.

PARTS REQUIRED TO ADD TTPMS to 2019+ RAM HD TRUCKS:
As of 6-21-20 You may find some of these parts, particularly the TIM module and jumper cable, currently out of stock everywhere, partly thanks to this thread.​

You will need to install the hard parts. @Phil T excellent instructions pdf HERE.

The hardest part of this is pulling down the headliner (easier on 2020) to remove a dummy plug jumper and install the TIM and jumper cable.

TIM and jumper location: (photo credit to @Phil T)

View attachment 58792

TOOLS REQUIRED:
  • AlfaOBD for Windows or Android (2020 trucks) ($50) (50% discount on the second license)
  • Security bypass cable like the one from KAOdTECH. ($50) or Jimmy ($?)
  • Bluetooth OBD-II adapter like the OBDLink MX/MX+ ($80/$120) or Vgate vLinker MC+ Bluetooth ($60) or OBD USB cable

You will need to enable the sales code option for TTPMS using the tools and components listed to "recode" the Body Control Module (BCM). There's a giant AlphOBD thread here if needing a primer. I used an ELM327 compatible OBD2 reader ($22 BAFX) with success but don't recommend these in general as they won't be able to perform all AlfaOBD functions.

Turning on the TTPMS option in the EVIC discovered HERE thanks to @g00fy

VehConfig 8: Trailer TPM

1589229719213.png



For the 2019 trucks, you may need to use the Windows version and select the MY2020 under advanced - also thanks to @g00fy
(ETA: AlphaOBD has been updated to include MY2019 TTPMS settings and the ability to override the BCM MY in the Android version as well as Windows)

An excellent writeup using AlphaOBD Windows for a 2019 written by @Phil T HERE

"The TTPM sends the information to the TIM via the Controller Area Network-Chassis (CAN-C) to be transmitted to the IPC."

ETA: P/T Chassis Net: TTPM must be enabled.

It may take several key cycles or time, or even overnight for the Tire Pressure options to show up in the U-Connect Trailer Settings once TTPMS is enabled.

@1FastHemi excellent post on adding the wheel sensors HERE:

I was unable to pair non-MOPAR sensors (external TireMinder) to the system. I don't believe anyone has been successful pairing non-MOPAR sensors.

Lastly, much of this could not have been possible without guidance and input and PARTS from @Jimmy07
Click to expand...
Hey, is part number 68516743AA, the only sensors that will work on 2022 and up ram 3500? Im having issues paring my sensors and I'm using part number 68600218aa. I have a 2024 3500 and i have done appropriate alfa programming.
  • 68526635AB
  • 68404893AB
  • 68412666AA
 
Jimmy07 said:
So now you’ll have all three types of bypasses, when only one is needed. You already had the Amazon one initially, and this all could have been done long ago with that one…
Click to expand...
Hi Jimmy,
I’m finally getting this connected to attempt the programming of the TTPMS (TIM).
VLinker is blinking, laptop has Bluetooth now, running the AlfaOBDII software, KaoDTECH cable plugged in…
I found the TRAIER INTERFACE MODULE in the drop down… but having issues connecting or getting past this one process.
Question: what is the “MAR” reference?
 

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Jimmy07 said:
So now you’ll have all three types of bypasses, when only one is needed. You already had the Amazon one initially, and this all could have been done long ago with that one…
Click to expand...
MrRogue1 said:
Hi Jimmy,
I’m finally getting this connected to attempt the programming of the TTPMS (TIM).
VLinker is blinking, laptop has Bluetooth now, running the AlfaOBDII software, KaoDTECH cable plugged in…
I found the TRAIER INTERFACE MODULE in the drop down… but having issues connecting or getting past this one process.
Question: what is the “MAR” reference?
Click to expand...
Ok I GOT it “CONNECTED”. “MAR” run position.
I don’t remember what I was supposed to do after I’m connected.
Not randomly flipping switches.
 

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MrRogue1 said:
Ok I GOT it “CONNECTED”. “MAR” run position.
I don’t remember what I was supposed to do after I’m connected.
Not randomly flipping switches.
Click to expand...

The first thing you should do is make a backup file.

Also Read System ID and save that base log file.

I don't recall anything you need to do in the TIM. The settings to enable it are in the BCM.
 
There's only 2 settings in the BCM you need to enable.

VehConfig 8: Trailer TPM Enabled
P/T Chassis Net: TTPM Enabled

G

Thread 'TPMS (TIS) sensors for trailer (SOLVED - see 1st post) aka TTPMS - Trailer TPMS'

Has anyone bought/installed the tire pressure sensors on a towed trailer that can be viewed on the driver information center after being configured in the UConnect? Specifically for the 3500. I am looking for the part number for the sensor.

I've tried a couple of dealers and yesterday chatted and then emailed Mopar support. Chat referred me to email. Email sent me a totally useless reply. "After doing some research, I found that I only have part information for those that come equipped with a particular vehicle or that are compatible with a vehicle. I would suggest that you speak...
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