To get hold of the information about your car including the detailed configuration taken from Teslas option codes has become increasingly difficult. If you enter you mytesla login details or token we can query the API for you however the information that is currently returned by Tesla is now wrong. We will return what information we can using that method but this won't help with the supercharging status.
The only way we know of without contacting Tesla is to get hold of the option code string via myTesla. Log into the account and click on ViewDetails for the chosen car, on the page that is returned you need to examine the HTML and select the configuration codes that follow the word "OptionCodes" in the text. Copy these codes and drop then into the bottom box on this page. We will convert each option code that we recognise, one of which is typically the supercharging status.
For details on free supercharging see our longer guide on free supercharging in conjunction with using this page.
There are a number of third party apps out there that all work in similar ways using your Tesla credentials and/or token. We believe you need to be very cautious before giving any of your details to anyone, and we'd actually recommend you don't. While we offer the facility to query your car, we do this as a one off and don't store your details. We actually recommend that to get more details on your car, go to MyTesla, get the configuration code for your car, and use that in the bottom box on our form.