If you have access to the user account with the car attached you can use “Remote S” on iPhone or “Dashboard for Tesla” on Android.
Remote S seems more reliable but is $$ as it shows the API output for the unlocked / uncorked flag.
"perf_config" = P1;
Dual motor cars; P1 means it’s uncorked, P3 corked.
Single motor cars; P2 means uncorked, P1 corked.
Regards,
Shane.