option 4: find someone who can help on TMC
@DaBase was able to activate 2nd row heating and ambient lighting on MCU2, model s, latest firmware- hardware for new features needs to be installed already obviously.
Price is reasonable- about half of Tesla's cost estimate to "investigate" why my HW was not working
- but no guaratee Tesla techs will activate features. I previously had good luck getting my MCU2 radio, fog lights, heated stearing wheel, spolier on display activated by a friendly tech at Tesla during warranty work, so that was basically free. But my friendly tech left
All
@DaBase needed was a Windows 10 laptop, anydesk/teamviewer, Tesla fakra-ethernet Service Cable (Tesla PN 1013230-00-A or
ebay ) and a strong internet connection near car. Took a couple of hours to setup the laptop but the actual activation was quick.
Was done using standard Tesla Toolbox 3.0 but with the privileges to unlock the gateway, which is the most important thing. I belive this makes the changes persistent between fws and can apply to any Tesla Model.
edit: any tesla model, found cheaper cable on ebay