ECU TSB Update

Hey, All.

In an effort to get you to the info, I have created spoiler buttons for some of the subjects. Hit them to get all of the hidden info!

This thread is for both AT and MT Tacos.

Sorry. There was some action on the vF Tuner side that looks like Corporate is getting unhappy with TS sharing. You'll have to find a download for it someplace else.

Note! Flashing a TSB has a chance of soft bricking your ECU. It is very important to follow the instructions and flashing tips below, esp the prompts in TechStream, to the letter. You have been warned. An ECU can be recovered, but it will not be fun.

Spoiler: Friendly / Unfriendly Dealer Map

https://www.google.com/maps/d/edit?mid=1-x8nTI7kfHsWAEzJEGPgLKLc86KiKYUi&usp=sharing

Spoiler: Thread Background Info

@Ruggybuggy did us a major solid finding the original MT ECU updates in the AT TSB TSB-0058-18 and starting this thread. He has moved on to the Tundra. I am updating the text for this post as this train has not stopped rolling. Toyota and Service Advisors have been generally difficult to get this TSBs applied for both ATs and MTs. So, this thread is the guide for updating your ECU at home.


From @Ruggybuggy :

"There now is a new software update similar to the one that the auto guys got. I've always had a surge with my '18 in second gear and the truck was annoying at times to shift. I purchased the OV tune and it made the truck acceptable to drive but still had the surge/stutter in second. I just did the update and it is a definite improvement even over the OV tune. My surge/stutter in second is gone. I've only driven the truck for about 10 miles so I'm hoping it doesn't come back. To get the update go on to your dealer and complain of a surge between 25 and 40mph and they will do the update for you. I'll get the TSB number later on. Sorry busy right now so maybe someone else can post a copy."

2018 MT ECU ID info from TechStream:

​

Credit to @mstrbrc , @Ruggybuggy , @Shellshock , @Saeros , @dilbert , and others.


All of the 3rd Gen ECU TSBs are attached.

All TSB Software (CUW files) are the same for each updated ECU ID. The different TSBs just note different symptoms and coverage. Strange, but . . .

Current TSB Info:

-- TSB-0134-16 -- Official ECU Flash Instructions.

These instructions are summarized below.
​

-- TSB-0058-18 -- 2016 through 2018 MT and AT Update
-- TSB-0062-18 -- 2016 through 2018 AT Update
-- TSB-0125-18 -- 2016 and 2017 MT and AT Update
-- TSB-0013-19 Rev 1 -- 2016 through 2018 MT and AT Update plus several other Toyotas

Includes Mexican Market ECU IDs​

-- TSB-0043-20 Rev 1 (USA) and T-TCI-5349 Rev 1 (Canada) -- 2016 through 2020 MT Update
-- TSB-0092-20 (USA) and T-TCI-5380 (Canada) -- 2019 and 2020 AT Update
-- TSB-0045-21 is released -- 2020 and 2021 AT Update

-- 2021 MT Tacos - no TSB update

MT ECU ID 04C30.
2021 Tacos require TS V15 to Connect and use Customization, diagnostic, or test functions.​

-- Added placed holders for the 2022s.​

​

** For a step-by-step installation guide, see @Shellshock 's excellent work at the end of this post.

-- Link back to @Shellshock 's Instruction Post: https://www.tacomaworld.com/threads/ecu-tsb-update.562550/page-161#post-23971823​

-- These instructions are also the last PDF attachment to this post. Thanks, @CAG Gonzo !​

Blocking TS internet connections to help with the usual warnings that we get:

https://www.tacomaworld.com/threads/ecu-tsb-update.562550/page-274#post-27348444​

Download and install the drivers from Tactrix.com:

https://www.tactrix.com/index.php?option=com_content&view=category&layout=blog&id=38&Itemid=61​

-- The Tactrix unit can be purchased on Tactrix.com also.
-- You just need the basic Tactrix OpenPort2.0 unit.
-- No extra Mitsubishi or Subaru reflash adapters are needed.
-- You will receive a Tactrix OpenPort 2.0 adapter with a miniUSB cable.​

Before connecting to the Taco, plug the Tactrix cable into your computer to verify that the drivers recognize the cable. Open TS to test drive the program and pick the Tactrix connection from the drop down menu.


Attached are the CUW files for both MTs and ATs. @dilbert put together this excellent spreadsheet to simplify things. Thanks!

​

From the attached CUW files, place the one that is needed for your Taco on the computer desktop.

Spoiler: Checking ECU ID after TechStream is Installed

Spoiler: For Aftermarket HU or Maestro Folks!

If you have an aftermarket head unit and maestro interface you may need to disable ODB communication in the head unit before using TechStream to connect to vehicle.





man these are awful photos. Let me try again tonight when glare won’t be an issue.

Credit: @daveeasa

IMPORTANT - Use this Checklist for Flashing. As best as you can:

Do not use hacked versions of TechStream for an ECU update.

Do not use a virtual machine environment to do an ECU update.

Do not use Bluetooth or WiFi dongles for an ECU update (USB only).

The Tactrix is a proven option. Other USB adapters (cheap chinesium ones) are not proven. A few folks have bricked their ECUs using them.​

Turn off Windows Update service.

Turn off Windows system sleep functionality.

Use the “always on” setting in power management pane.​

Turn off USB Power Management for the USB port you are using.

Plug the laptop into a wall outlet.

Set the computer on the seat and do not touch it while it flashes! A bump or loose USB port could be a bad day.

Hook up a battery maintainer to the vehicle during an ECU update.

Turn off all electrical consumers during ECU update.

Open the hood.

Spoiler: Flash Instructions

Once you are ready to flash your Taco do the following:

-- Key out of the ignition
-- Plug in the Tactrix to the OBDII port by your left knee
-- Double click on the CUW file on your desktop that applies to your Taco
-- Follow the prompts exactly​

Spoiler: DTC, Learned Value, and AT Resets

It is recommended to Reset the DTCs, Learned Values, and the AT after you flash. MTs do not have the AT to reset. So, after the ECU flash:

-- Start the motor briefly to test.
-- Shut the motor off and then turn the ignition back to On without the starting the motor.
-- Launch TS, connect, and find the Reset functions.

​

-- Hit the DTC Reset, the Learned Value (LV) Reset, and the AT Reset, if you got one.

DTC Reset:


LV Reset:


AT Reset:

​

-- Once done (just a few seconds), start the motor and idle for about 5min while touching nothing.
-- The idle will be a bit rough after that 5min and the first few miles will be a bit wonky. Things will smooth out and be really, really good. The tune will settle in, learn, and adapt over the next 400mi or so.

Credit to @G8R_Taco for the screenshots!​

Spoiler: Shellshock's Step-by-Step TechStream V14 Installation Instructions

** TS V14 Installation Instructions (credit: @Shellshock )

Here's step by step setup instructions to setup TechStream V14. @Shellshock just did this using the download link from above on a clean state machine with nothing else installed so everything should be captured and documented. If you get a UAC pop up from windows, click Okay.

1) Download V14 from above


2) Click download


3) Click download anyway


4) Save the file


5) Browse to the file download location (typically in your downloads folder)


6) Right click and extract the files


7) Browse to the extracted files


8) Double click GTS_14.20.019_NDSI and click next


9) Next


10) Accept the terms. Next


11) Put something in User / Company. Next.


12) Install


13) Finish


14) You'll now see TechStream on your desktop. Double click TechStream


15)


16) Select North America. Next.


17) Select English. Next.


18)Fill in Dealer Name, Dealer Code, Dealer Phone. Click Ok


19) Any time a Java pop up appears, Click No. It also appears when you launch TechStream.


20) Copy the Software ID (highlight, Right click, Copy)


21) Double click techstream-act.exe to run (found in the folder of extracted files, Step 7)


22) Enter the number "2" for TechStream V14.20.019 (the version we have installed). Press Enter / Return Key


23) This step is optional but will make the next few steps much easier. If you don't do this one, you will need to manually type out the Software ID and Activation key. I'm lazy and can't type, so I copy / paste.
Goto the upper left corner of the window, right click, select properties. Check the box for quick edit mode. Press Okay


24) Right click anywhere in the window. The key you copied earlier will paste. Press enter. The activation keys will appear. Select the "NA Activation Key" and right click. This will copy the key.


25) Paste the key into TechStream and click Okay, not any of the other buttons.


26) Techstream will now show 5000+ days remaining in the lower left


27) In the top menu bar Click setup and VIM Select. Change the drop down to Openport 2.0. Click ok.
If this does not appear as an option in the drop down, you need to install the Tactrix drivers and plug in the cable.


** If you get a forced TS Critical Update prompt when trying to Connect to Vehicle, turn off wifi and try again. The 30 use countdown will restart if you accidentally Connect to Vehicle on wifi again.



28) At this point TechStream is fully configured and operational. You can click "connect to vehicle" in the upper left to complete any customizations (seat belt chimes, blinkers, etc).

29) To apply a TSB, all you need to do is double click the CUW file and follow the on screen prompts.

** If you get a forced TS Critical Update prompt when trying to Connect to Vehicle, turn off wifi and try again. The 30 use countdown will restart if you accidentally Connect to Vehicle on wifi again.

Spoiler: Taco Dealer Customizations

Off Topic -- Programming Customizations in TS Step by Step (credit @CdnSldr ):
https://www.tacomaworld.com/threads/techstream-tips-and-tricks.597998/page-3#post-22827797

Note!! Some 2020+ have the ability to turn off the Door Chimes. See the 3rd screenshot.

 

You better be serious!!! If this is fake news I am gonna freak!

How did you find out about it?
What did you tell the dealer to get them to do it?
Also, should I mention there is a TSB?

I’m actually going to the dealer tomorrow for something else so I will definitely talk to the numbnuts that work in service.

 

In like a needle to Demi Lovato’s veins.

 

It is true, there is a update for it.

 

That’s damn cold dude. True, but damn cold.

 

MORE INFORMATION PLEASE

 

I just want to say that this thread is going to definitely be over 100 pages. Finally, Toyota starts trying to help the manual owners!!!!!

Toyota Gods sorry about all the bad shit I’ve said about you!!!

 

I have that issue and am looking forward to the TSB post. Thankfully Toyota is paying attention to complaints.

 

We talking about a surge or dip here?

 

Surge for me....sort of like when the VVT kicks in.

 

I think this information needed to get this moving is gonna be more highly anticipated than Meso’s ultimate LED signals!!!

 

Someone could just pay $20 or whatever it is for a 2-3 day TIS subscription and pull down the TSB. Done it a couple of times to get the TSBs posted to the forum. I’m an AT so no dog in his particular game but I’m very glad they are doing something about this for all... 3 years later

 

sub'd

 

sweet. got my first long road trip in two weeks. will have to get it in before then.

 

It's not a cruel joke. I was checking my own truck at work during lunch for any software updates and after I did the health check it showed that a software update was available. I performed the update and drove the truck home after work and was pleasantly surprised. The update covers 2016-18 and the tsb mentions it's a fix for the surge. I did check TIS for the TSB number when I got home but it's not posted yet so it must have just been released.

 

BY THE GODS, LET IT BE TRUE!!!

 

I'll try to post the TSB number from work tomorrow.

 

Pics?