How to Change Pre Collision System default to Off

Hello, this is my first post on this forum. I'm hoping someone can help with this.
I purchased a new 2020 Tundra Limited in August '20. Overall pretty pleased with the truck.

However, twice now the Pre Collision System has gone way overboard braking. I have the sensitivity set to low, but in the two instances I'm referring to, I could have done a much better and smoother job of slowing the vehicle down as opposed to this automatic system. I very much would like to change it's default to OFF. Documentation doesn't give any info on this, just to set it to OFF each time you start the truck. My dealer is no help.

Does anyone know how to change this default setting?

Thanks for the help in advance.

 

Doubt it’s possible. The pre collision braking system is automatically on because it is a safety system used to determine the Tundras crash rating I believe

 

The system is defaulted on every time you turn the truck on.

The only way is to have the dealer change it in the ecu. But you have to sign a waiver releasing Toyota of any warranty or liability regarding the system. You also will have the pre collision off lights on the dash all the time.

 

I could be mistaken...
However, my understanding is that this process (selecting 'off' for Pre-Collison) has to be done every time the truck is turned on again. So, turn on the truck configure settings to 'off' then drive to destination. Once truck ignition is turned off, the whole process of selecting the 'off' setting for pre-collision needs to be done again...

https://youtu.be/b3IjycVKFEg

 

ElNopal, you are correct that is how the trucks are set up.
Danman, I'll try seeing if the dealer will re-set in the ecu. I'm definitely willing to sign a waiver since I feel this is much more of a danger than a safety feature with how mine is acting.

Thanks for the help!

 

I’m pretty sure it’s done in Techstream. In my experience it hasn’t worked for me, but you can buy bootlegged copies of Techstream and try it yourself. Then toyota wouldn’t have any record of disabling it. But if you are in a wreck and esp if you rear end someone, I’ve heard the insurance co could pull your ecu and check it.

 

Eh, if you rear end somebody you’re at fault regardless. Having a functioning pre collision system will not save you in any way from being held responsible. Hence why Toyota clearly states the pre collision system is not a replacement for safe driving. Their covering their asses of all liability by stating that anyway.

 

I can see some little old lady on her way to church pulling out in front of you and you not being able to stop in time and sideswipe her. Sure it’s her fault. But when she is suing you for medical bills and they pull your ecu and see you purposely disabled a safety feature that could have prevented the collision, it could be a tough fight.

Will that ever happen? Probably not. But you take that chance. And there are a lot of lawyers out there happy to drag you to court. Look at all the dui drivers that get off all the time after a collision.

 

Problem is, the PCS has braked WAY too hard on me twice now. The PCS can very likely cause the wreck, at least in how it's working in my truck. I'm 64 and have never been in an accident (knock on wood!). In both cases I was smoothly stopping and in plenty of time when the PCS totally nailed the brakes. I was very lucky I wasn't rear-ended each time.

I've called the dealer again today and got someone who was interested in helping and he's supposed get back to me today. I'll update this thread once I hear back.

Thanks again for the help.

 

check this out MC-10173968-9999.pdf this is what toyota sent me.my local dealer offered me a sweet deal on a 2020 told them I would only buy it they would disable tss & precollision system if I'm going to spend that much money I want a truck that I drive, not one that drives me

 

Man, permanent is a strong word. It could hurt resale value. Unless I missed it, does the light stay on?

Also it’ll never happen anyway cause the tech will be stuck at step 2.

 

Yes your right. The software recalibrated was designed only to be used on modified trucks to protect them from a millimeter radar sensor that is out of calibration because of a grill change or ride height change. Toyota did this to protect themself from a liability. You push the button and you accept that the system may not perform correctly.