Here is the working solution for cannot program Toyota Tacomas (3rd Gen 2016+) TPMS IDs in Techstream.
Example: 2020 Toyota Tacoma/2022 Tacoma.
The solution should be fine with other newer Toyota models as well.
Background:
I recently installed a 3″ lift, and naturally, got bigger tires (285/70/17) and new wheels. After a month long, painstaking experience with my local 4WP shop, I opted to not let them work on my truck and decided to do everything myself (minus the alignment and tire mount/balance).
One of the many problems I had with 4WP, including waiting 4 days for my tires to be mounted and balanced, was that I had asked them to scan the new TPMS sensors that they installed so I could program the ECU w/techstream. I was told that’s not how the TPMS (system) works and that “the truck will learn the TPMS sensor IDs itself”. As a former diesel mechanic, I knew this to be bullshit, despite my very limited interaction w/the TPMS. This issue is what would be solely responsible for the rabbit hole that I would be diving down…that and my spitefulness.
So. Now begins the fun. I found the model of the TPMS sensors that 4WP installed (Oro-Tek PDQ) and purchased a scanner/programmer that was compatible w/them (ATEQ VT37). Now, this part isn’t technically needed if you were able to obtain the sensor ID’s from the physical sensor itself or by asking a COMPETENT tire shop to write them down for you when they mount/balance.
Which Techstream Cable to use?
I then, like many others, purchased a
Mini VCI cable.
It’s just a cable right? Ha. No.So I install the drivers for the cable and select the appropriate VIM on techsteam. I then connect to my truck via techstream and noticed that the vehicle information doesn’t auto-populate like on the Mac/Volvo/Hino/Mitsu software I’ve used in the past. So, I manually inputted it, not thinking much of it.
I then go into the Tire Pressure Monitoring System and open the Utility to program the new TPMS sensor IDs input the IDs which I scanned off the sensors…and get this error:
At this point, I tried changing and reverting other settings from within techstream. They all worked fine. I then tried 3-4 other releases of techstream from their blog. Still won’t work. After a crap ton of searching I saw the TSB about jumping pins on the OBDII plug, but noticed that one of the spots didn’t even have a pin in it, so that was useless. I saw a few “your cable is bad” comments and several “I tried multiple of the same Mini-VCI cables” responses.
I then found someone who had posted something about a “VXDIAG VCX Nano Toyota cable” claiming that it worked for them. I then found a VCX Nano for Toyota (it appears each manufacturer has it’s own model) on obdii365.com for $95. I figured if this is what it costs to have something that actually works then I’ll try it.
It arrived today and I once again found myself installing drivers and setting the VIM to what I now see as “Toyota J2534”. This is beginning to look promising. I launch techstream and connect the truck and the first thing I notice is that it has auto-populated my VIN, model code, and vehicle spec. It also loaded much faster than the Mini-VCI cable.
Jump over to the TPMS menu again, try changing the sensor IDs and…
Well hot dang…it actually worked. Proof below if you need more convincing to spend the money on a better cable:
As you can see, using a very scientific numbering scheme for my new sensors, it worked.
Morale of the story. I spent way too much time and money, purely out of spite for my local 4WP shop and for the future of tire changing freedom. But I hope that this post will help someone else who is struggling to figure out why they cannot program their TPMS sensor IDs with techstream.
Total cost:
$95 for the VCX Nano
$153.67 for the VT37
$32.99 for the Mini-VCI cable
So yea, less than $300 purely out of spite/anger. But I’m also slowly gathering everything I need to do my own tire installs and alignments. And like I said, you don’t necessarily NEED the TPMS programmer/scanner. The important thing in that list is the VCX Nano Techstream cable. Without it, you will not be able to program the TPMS ECU (at least w/3rd gens). Don’t waste your money on the Mini-VCI. There are other brands out there as well, but from my research, they were far more expensive. The other option is to buy a $300+ TPMS programmer/scanner that comes with an OBDII cable. Should be able to program everything there.
The link to the VXDiag Drivers/Software has both V16 and V17. Also, I don’t recommend installing it on a computer you use everyday. You’ll need to disable the windows virus protection or it’ll delete files it marks as malware. I use an old lenovo thinkpad that I had bought on eBay 2 years ago for use in my garage.
You can probably get away with a scanner that just reads the IDs, or see if a tire shop can scan them for you real quick and write them down. They’re a simple 7 digit hexadecimal code. You’ll need to know the sensor brand before you buy a programmer, as not all programmers are compatible with all brands (such as the Autel programmers). However, as just a scanner tool, I believe all scanners can read any sensor. I could be wrong, but they all work off the same frequency (315mhz) so I don’t see why not. Also, reprogramming the physical sensors only works on reprogrammable sensors. It will not work on OEM ones. So, you don’t necessarily need to drop $150 on the VT37. I bought it because I plan on doing all of my own tire/alignment work in the future because I don’t trust most of the shops in my area and the good ones are always backed up.
