traction control off button for 2014
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Thread: traction control off button for 2014

  1. #1
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    traction control off button for 2014

    I noticed at the showroom that the new ct has a "trac-off" button. Does anyone know if we can adapt this to older CT's?


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  3. #2
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    Quote Originally Posted by Sailo View Post
    I noticed at the showroom that the new ct has a "trac-off" button. Does anyone know if we can adapt this to older CT's?
    No


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  4. #3
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    Oh, how much I would have loved if someone came up with that modification. That traction off button you mention is the single biggest safety improvement over the pre 14 CT's.

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  6. #4
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    I'm curious if the button is on the can network or if it's an input to the ecm.

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    i know this is a really old thread, but for those interested, on the australian models (2011) if you push down REALLY hard on the brake so it hits the floor, you can turn off the traction control, do the same to turn it back on. not sure if overseas models are the same

  8. #6
    Senior Member stormchaser's Avatar
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    Really?
    There is no way I could even get my brake pedal right down to the floor.


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  9. #7
    Senior Member Raidin's Avatar
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    Quote Originally Posted by sin008 View Post
    i know this is a really old thread, but for those interested, on the australian models (2011) if you push down REALLY hard on the brake so it hits the floor, you can turn off the traction control, do the same to turn it back on. not sure if overseas models are the same
    Do you mean the same way you do it to activate Hill Descent Control?

  10. #8
    KKM
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    I saved from one of the CT forums how to turn the tractions with the procedure below. I have never tried it and don't know if it actually works, so try at your own risk, I'm just copying and pasting the information. If someone does decide to try it, post if it works:

    1. Hey Alex,

    The method of disabling TRAC/VSC is simple. I hope this helps for future reference.

    Please be careful not to accelerate suddenly on the dyno, this procedure disables the rev limiter for the electric motors and can blow your electric motors.
    MAINTENANCE MODE
    (2WD for measuring Exhaust Gas)
    - Inspection of ignition timing etc. when performing engine maintenance, idle speed exhaust emissions testing (CO, HC), etc.
    - Tests using a speedometer tester, two-wheel chassis dynamometer, etc.
    - Keeps the engine idling when park (P) is selected
    - Cancels traction control

    CERTIFICATION MODE
    (2WD for cutting TRC)
    - Tests using a speedometer tester, two-wheel chassis dynamometer, etc.
    - Cancels traction control

    The manual does go on to give a bunch of warnings:

    (3) Cancel inspection mode immediately after completion of inspection.
    NOTICE: Driving the vehicle without canceling inspection mode may damage the transaxle.

    NOTICE:
    Do not perform rapid starting or quick acceleration on a speedometer tester. If rapid starting or quick acceleration is performed on a speedometer tester, damage may occur to the transaxle.

    NOTICE:
    Sudden acceleration or deceleration of the vehicle on a chassis dynamometer under minimal load may damage the transaxle.

    I don't see how that's the case ... but perhaps, like other people theorized, the traction control is there to prevent wheel hop and shock to the drivetrain. It does give the warning several times, so use with caution.

    You have been warned:

    Maintenance Mode:
    Perform the following steps from (1) through (4) in 60 seconds.
    (1) Turn the power switch on (IG).
    (2) Fully depress the accelerator pedal twice with park (P) selected.
    (3) Fully depress the accelerator pedal twice with neutral (N) selected.
    (4) Fully depress the accelerator pedal twice with park (P) selected.
    (5) Check that "MAINTENANCE MODE" is displayed on the multi-information display.
    (6) Start the engine by turning the power switch on (READY) while depressing the brake pedal.

    HINT:
    The idle speed in maintenance mode is approximately 1000 rpm with park (P) selected. The engine speed increases to 1500 rpm when the accelerator pedal is depressed midway with park (P) selected. When the accelerator pedal is depressed more than midway, or when the accelerator pedal is fully depressed, the engine speed increases to approximately 2500 rpm.

    Certification Mode:
    Perform the following steps from (1) through (4) in 60 seconds.
    (1) Turn the power switch on (IG).
    (2) Fully depress the accelerator pedal three times with park (P) selected.
    (3) Fully depress the accelerator pedal three times with neutral (N) selected.
    (4) Fully depress the accelerator pedal three times with park (P) selected.
    (5) Check that "CERTIFICATION MODE" is displayed on the multi-
    information display.
    (6) Start the engine by turning the power switch on (READY) while depressing the brake pedal.

    To disable both modes, just turn the car off.

    This applies to all 2ZR-FXE engines, such as the 3rd gen Prius and the CT 200h. I hope this helps.

    c

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