Interfacing with Tesla

[poundsand]

Hello all -

I've been searching, but can't find the info I'm looking for regarding how third parties interface with the Tesla controls.

Is there a good resource somewhere for whatever interfaces hardware such as the tesla M3/MY rear screens and S3XY buttons use for seat heating, air, media volume, etc controls?

Thanks in advance!

 

[jjrandorin]

They all use the unofficial Tesla API.

 

[smogne41]

Hello all -

I've been searching, but can't find the info I'm looking for regarding how third parties interface with the Tesla controls.

Is there a good resource somewhere for whatever interfaces hardware such as the tesla M3/MY rear screens and S3XY buttons use for seat heating, air, media volume, etc controls?

Thanks in advance!

At least for the S3XY buttons they tap into one of the vehicle CANbus networks and read traffic on there to read values, and inject CAN messages there to trigger events. These CAN messages are known from reverse engineering, they are not published by Tesla.

 

[smogne41]

This .dbc file is a little old so not every message my still work, but this is a decent publicly-available list of Model 3 CANbus messages as an example:

GitHub - joshwardell/model3dbc: DBC file for Tesla Model 3 CAN messages

DBC file for Tesla Model 3 CAN messages. Contribute to joshwardell/model3dbc development by creating an account on GitHub.

github.com

 

[poundsand]

At least for the S3XY buttons they tap into one of the vehicle CANbus networks and read traffic on there to read values, and inject CAN messages there to trigger events. These CAN messages are known from reverse engineering, they are not published by Tesla.

Yeah, I'm wondering if this has good documentation anywhere.

This .dbc file is a little old so not every message my still work, but this is a decent publicly-available list of Model 3 CANbus messages as an example:

GitHub - joshwardell/model3dbc: DBC file for Tesla Model 3 CAN messages

DBC file for Tesla Model 3 CAN messages. Contribute to joshwardell/model3dbc development by creating an account on GitHub.

github.com

Cool, thanks. Has a link to TOO tech section that might provide good info.