No, you don't need to modify your vehicle at all. SideDisplay works through Tesla's built-in web browser. You can wirelessly extend your MacBook screen to the Tesla display without any cables, adapters, or physical modifications.
Because your MacBook's Wi-Fi needs to be used for Internet Sharing. If you tether your iPhone via Wi-Fi, your MacBook's Wi-Fi will be occupied by the iPhone connection and won't be able to share Wi-Fi to your Tesla. By receiving the iPhone's internet via USB cable, your MacBook's Wi-Fi remains available for Internet Sharing to connect with your Tesla.
SideDisplay modifies your Mac's network settings in two stages to establish a connection with Tesla.
- Network connection setup — Configures the network so Tesla can connect to your Mac.
- Domain access setup — Enables easy access via the address
go.ssfrom Tesla's browser.
Each stage can only proceed after the previous one has completed successfully, so they cannot be combined into a single request. This is why macOS asks for your administrator password at each stage.
Yes, it's possible. However, Tesla is known to be unable to connect via Private Address Spaces defined in RFC 1918 (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16). So it will work if you can configure your wireless router's network range to a different address space.
Also, note that latency may increase depending on the router's performance.
Yes, you can. After launching the SideDisplay app, change the port number to your desired value and click Start to connect on that port.
Note that when accessing from the Tesla Web Browser, you'll need to append the port number to the address. For example, if you changed the port to 8080, navigate to http://go.ss:8080.
Please quit the app and relaunch it.
Each device requires its own license. If you'd like to use your license on a different device, you can either purchase an additional license, or deactivate the license on the current device by launching the app and selecting Deactivate, then use that license on another device.
Tesla checks whether internet access is available when connecting to Wi-Fi and refuses to connect to wireless routers that don't provide internet access. Therefore, your MacBook's Internet Sharing must be able to provide internet connectivity.
After enabling Internet Sharing, make sure the Wi-Fi icon in the Menu Bar has changed to the Internet Sharing icon 
.