Traction Control turns on randomly

Hi, I drive a 2017 Tacoma TRD Sport and recently noticed that whenever I turn into a speed bump or driveway my traction control will go off randomly. The truck never used to do this so I tried to get it to do it again but it only does it sometimes. I checked all the sensors and they’re still good and I got the truck realigned recently and it still does it. I was wondering if you guys have any ideas. Thank you!

 

If you're on the gas, the rear inside tire can easily slip enough to trigger it, esp in the wet and with tires that are getting older / worn.

 

It’s happened in the wet and dry and I have brand new KO2’s that have only 5k miles on them. What really confuses me is that I turn off my traction control and it will still do it. I forgot to mention that originally too

 

Oh. That is weird, even as you have a 2017 with no TSS-P gizmos to calibrate.

Still, you could do a Zero Point Calibration to see if that helps:
https://www.tacomaworld.com/threads/how-to-reset-and-calibrate-your-vsc-computer-the-easy-way.467485

 

Or when tires are in the air and can accelerate freely.

 

That also.

I tend to goof off a lot and get the inside rear pretty lightly loaded, so I see the TCS light flash pretty often.

 

I would almost bet your getting enough variation in wheel speed that the wheel speed sensors are picking it up and triggering the TCS/VCS systems.

I would start with a Zero Point Calibration.

 

Alright I’ll try out the Calibration to see if I can figure it out, thank you!

 

FYI: Traction control button has to be held down to completely disable it. Pushing it once only enables the auto LSD.

 

Same same. I need to do something about my rear bumper stops haha.

 

I think I’m missing out. My taco has never sqawked the tires on pavement (dry or wet). I remember when I bought my 2016 and being the first automobile with traction control I was very surprised when I pushed the pedal to the metal on gravel and truck creeped forward peacefully. How gutless is this truck was my first thought. Later I learned how to disable the fun police.

 

I think it depends on the speed of the inputs. Like from a dead stop, there's time for the computer to stay on top of traction. But rolling ahead or adding roll (left and right) into the mix plus throttle position etc, it can't keep up.

 

Thank you for all the input guys! I couldn’t really figure out how to do the Zero Point calibration so I’m gonna have my buddy who’s a mechanic look at it tomorrow

 

When l first bought my old 2015 it kept kicking in traction control and ABS, turns out the had over 50 psi in the tires.

 

My fam hates how close it appears, but it is actually pretty far away.

You're welcome!

 

I agree. There's probably a lot of travel but it seems so far.

 

I'd start by checking your tire pressures. Some shops will just fill the tire to the max PSI it says on the sidewall. KO2s only come in LT sizes. So the max PSI depending on the tire's load index will be 50, 65, or 80 PSI. This should give you a general idea of where to be at tire pressure wise. If that's the issue.

 

I have all my tires set at 38-42 depending on the temp

 

They should only be around 29 or 30 as the Placard on the door and the Owners Manual recommend.

 

38 is the oem psi I believe, I deflate them to 25 whenever I’m on the dirt lol