DIY: Automatic Traction Control Disabler

No worries, and I didn't mean to come off in a dickish way. Just throw a link here when you're up and running, and I can add it to my OP as well.

 

I see guys posting with a range of years of Tundra. Looks like people from '07 to '21 have commented. Would this mod work on all Gens? I don't see anyone here posting with a 1stGen. Have the nanny controls remained the same throughout the years?

 

Like my post said, the Trac-Control Disable mod that's offered now won't work on my 2010. There's a difference in the stock harness that prevents it.

 

They're different throughout the gens - Even 07 vs 08-13 vs 14-21 have differences. I think this one works for 08+, but not positive on that. the 07 might have more in common with the first gens, but, again, I haven't done any research on that end. I'm sure with a little tweaking, this module would work for any year, assuming the trigger button always uses a ground to complete the signal.

 

So the one i did will work on the 14-21 models. I’m trying to find someone local to my area with an 07-13 model year and test it to see what configuration it will need or if what i did will work for it. Here is the one I did up to test on my truck. https://youtu.be/QFjNi_GPYxU

 

TDRFerg,
In these two pis, the top pic hoes to bered wires.
Are these the two you connected to the wires of the VSR switch in an earlier pic?
Is so, why is there only one connected to the VSR pic in this quoted bottom pic?
Thanks
Clif

 

That was an in-progress pic. If you read through the 1st post it’ll give you all the info you need, but here’s the relevant pic of both wires tapped.

 

That's what I suspected. I just wanted to make sure.
Thanks

 

Thanks alot for such information,

i do have Sequoia 2010 and I would love to add traction controll push button on it, i came to know that the wiring box is under the driver seat on the left side. I would be so appreciate it if you have such a wiring diagram or if your have let us your tundra wiring by taking some photos,

cheers

 

I wouldn't know where to start on this if you don't already have a traction control button, if that's what you're implying... You could check here to find the right wiring diagrams: https://www.tundras.com/threads/ultimate-tundra-wiring-diagrams-collection.81448/

 

Quick question: does this enable beast mode automatically, or do you have to cycle the switch in order to do that? Say for example, I get in, start the truck, and press the switch. So now beast mode is enabled, and the switch is latched “on”. Next time I get in, do I have to turn the switch “off” and then back “on” to reenable beast mode?

Also, it was mentioned about cruise control, but I do have a more general question: if you have beast mode enabled and want to disable it while driving, how do you do that? Press the VSR switch again?

Sorry for the stupid questions, in a Tacoma guy

 

As long as the switch is latched on, it’ll automatically do the sequence at start up every time, without any interaction on your part (assuming you aren’t throwing it into gear and going above 5mph within 4 seconds of the engine starting). That was my original use case, making this activate every time I get back in the truck while off roading.

As far as deactivating beast mode, just press the VSC button and you’re back to normal.

 

Any progress on building one for 2010's?

 

I haven't been making them (not enough free time and wouldn't feel comfortable charging the amount I'd need to get out of it to interest me) and don't have a 2010 around me to test. I can't remember if you've already said in this thread, but what's the process for disabling traction control on yours? If you know the button presses and timing needed, I might be able to dig through the wiring diagrams and figure something out.

It's funny, because a couple buddies and I were talking about this over the weekend. Maybe enough interest on here could convince me to look into sourcing connectors and such to make a plug and play version that could work with 2/2.5 gen Tundras.

 

I'm interested in one for my 2020.

 

Process is push, release, push again. Really just the opposite of what I'd consider common sense would require.(Common sense being these nannies are off till they're needed) Almost forgot, this is Toyota, where you need to re-start the truck after remote starting it. The same geniuses who were responsible for deleting the driver's side grab handle for several years?

 

So, did you end up connecting the green switch wire to ignition, not battery?

 

Oh, also another stupid question (don’t worry, I have plenty of them, so no fear of running out…): I assume the VSR (is it VSR? I’m used to VSC on the Tacomas) is a momentary switch?

 

Correct - I just stole the diagram from the timer manufacturer's site and potatoshopped in my stuff. It can be any 12v, ignition activated source. I have an add-a-fuse tapped into an open slot on the interior fuse panel.

I think my truck is also VSC, but not sure if there's a VSR variant out there. It's a momentary switch that grounds a low voltage signal from the ECU, from what I've gathered. That's all the external relay is doing, grounding that signal without using the button itself.

 

But what is the actual button you are pushing, and what is the duration of each push? 3 seconds on, release, 3 seconds on? If that's the case, that's the same as 2014+, so I don't know why the other module wouldn't have worked for you. 2007 is supposedly an entirely different button and process, so that's why I'm asking for specifics before I even try to start going down the rabbit hole.

 

That's the process. I worked with it for hours during several days. The 12 volts from the lighter wasn't successful for me either, that really threw me. Have there been any changes in the procedure from years past?

 

I do okay with following instructions and fabrication. I think I understand what your DIY is all about, Jake. I think I could make this. It's awesome, and I want to. I've already an unused switch on my panel; "Passenger Eject." However, I know next to nothing regarding electrical troubleshooting, and I currently have a non-functioning VSC Off switch. Non-functioning as I get no dash indicator lights when pressing it; long press nor short press. Shifting to 4WD Low, however, lights up my dash, so I assume my TRAC/VSC system is functional. Cruise Control works well too.

2020 Platinum CM JBL, I've only had the truck since July. Honestly, I don't know if my VSC Off has ever worked for me, or the issue just started. I have been into the dash numerous times: Full sound system upgrade, FRAC install, BlackCat Switch Panel with new switches, etc. Perhaps in all that I cut something? Didn't plug something back in right? My VSC Off switch does illuminate with DRL and headlights, so I'm pretty sure it is plugged in.

If I'm understanding correctly, regarding the wires to the VSC Off switch, (Dark) Violet has voltage from the ECU, Pink is Illumination +, Brown/Black is Illumination -, and White/Black is ground. Operating the switch, momentarily connects White/Black to Violet, right? So, could I take a multi-meter and test that? All I can think to do is validate that the switch is working and work back from there. I guess if I don't see any voltage on the Violet wire, there is an issue upstream. Do you know what voltage I should be seeing?

 

Can't believe I missed this, great work Jake!

 

Dumb question… but I assume everyone is manually turning on tow/haul switch, right?

 

Hey Steven, sorry, I'm just now seeing this. You're correct in that the ECU voltage gets grounded from violet to white/black via the switch. I measured the voltage when I initially set all this up, but I forget what it was. It was lower than 12v though. If I get a few minutes later I'll see if I can get a reading and follow up on here. It might be worthwhile to check fuses if you haven't already. Tough to say if the previous owner dicked around with the wiring, so I'd also open up the dash and see what's going on back there, whether anything aftermarket is spliced in.

 

Yep, I'm still hitting that one manually if I have a need for some extra pedal response. I usually just go nannies off and leave tow/haul alone when off road though.

 

I'm sure those who do use it turn it on for whatever it's supposed to do. I'm always in 'S' mode and never bother with it. If I want gears to hold longer or downshift quicker, I do it.

 

Anyone decide to make a few of these and sell them yet?

 

For 2nd gens?

 

Yes. Want one for mine but been waiting for someone to start making them rather than doing it myself.