# Toyota Prius traction control override

**URL:** https://boards.straightdope.com/t/toyota-prius-traction-control-override/561385
**Category:** Factual Questions
**Created:** [November 21, 2010, 12:46am UTC](https://boards.straightdope.com/t/toyota-prius-traction-control-override/561385 "2010-11-21T00:46:19Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![Johnny\_L.A](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/johnny_l.a/32/1084_2.png) [@Johnny\_L.A](https://boards.straightdope.com/u/Johnny_L.A)
#### Post date: [November 21, 2010, 1:26am UTC](https://boards.straightdope.com/t/toyota-prius-traction-control-override/561385/3 "2010-11-21T01:26:06Z")

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Thanks for the hint, **davidm**.

I found [this](http://www.eaa-phev.org/wiki/Prius_Modifications#Disabling_Traction_Control) (emphasis original):

> [@](#):
>
> **WARNING: The shop manual apparently states in no uncertain terms that this procedure must NOT be used to drive the car as damage to the transmission could occur due to traction control being defeated.**
> 
> Follow the sequence below (quickly - within 60 seconds)  
> [ul][li]Set Ign switch to ON, not READY (Power button twice, no brake)[/li][li]While still in “P” fully depress the gas pedal two times.[/li][li]Select “N” fully depress the gas pedal two times.[/li][li]Select “P” fully depress the gas pedal two times.[/li](LCD display will indicate a !Car! in upper left corner of screen)  
> [li]Turn key directly to “start” to start the engine (brake+start button)[/ul][/li]It forces the ICE to run continuously and defeats the traction control system. Normal operation returns after turn off and reboot. Unlike EV-Mode this is **strictly a diagnostic function and should not be used under normal situations.**

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