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Disable traction control and all nannies with dyno mode


Jun 3, 2019
FYI Secret Dyno Mode to disable traction control : teslamotors

Someone discovered this in an EPA filing. Have not tried. Anyone know about this or played around with it?

Text from EPA filing:

Tesla, Inc. is currently completing the implementation of user interface (UI) features that enable access to our “Dyno Mode” for all users. This feature is required to be enabled to maintain representative driving controls while testing on a chassis dynamometer. Access to Dyno Mode will be introduced at the start of production on October 7th, 2019, and will be deployed to the entire Tesla fleet in version 2019.40 over the month of October 2019.

In order to preserve the proper driving functionality and behavior, Dyno Mode executes the following features:
‐ Disable Stability Control to ensure no false interaction with the dyno.
‐ Disable Traction Control to ensure no false interaction with the dyno.
‐ Disable Active Drive Line Damping to avoid inducing oscillations in the dyno.
‐ Force the torque split to be as it would be under normal straight‐line driving conditions
‐ Disable Brake Disk Wipe

When the Stability Control and Traction Control systems become faulted, as is the case on a dynamometer where driving is detected but movement is not, regenerative braking is disabled so that unintended braking torque does not lead to loss of traction or control on low friction surfaces. Disabling Stability Control and Traction Control prevents those systems from disrupting regenerative braking behavior, maintaining the most representative driving energy consumption.

Dyno Mode can be activated by the user, according to the following steps:
1. Vehicle must be in Park.
2. While holding down left (turn signal) stalk, press and hold the Tesla “T” logo at the top of the screen.
3. Enter the Dyno Mode activation password, “dynotest”.

Dyno Mode can be deactivated by the user by pressing the “Power Off” button within the Safety & Security tab of the UI.

We are targeting completion of this Dyno Mode feature for installation in all new production vehicles by October 7th, 2019. Over the month of October, we will be rolling out this feature to our US fleet, enabling all Tesla vehicles to enter Dyno Mode.


Supporting Member
Aug 6, 2018
NorCal, USA
Need to hold the stalk and T logo until the T logo flash once. Then...
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Reactions: Dolemite and bcpm3p


Jul 9, 2018
San Diego
Wonder how different it will feel from track mode?

Also wonder if it disables ice mode on the brakes (yes car I still want you to apply braking force even though 1-2 tires are slipping)


Jun 4, 2019
Is it really harder to control than a Mustang at cars and coffee? :p
Actually, yes.
AWD + completely open axle diffs are VERY unpredictable. I suspect EVs of similar setup require extreme finesse to control. I suggest anyone playing in the snow with this mode one allow for ample run-off room.

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