If you have an XSE Prime and an iPhone, you can Lock and Unlock your car:
1.) Remove the car from the app
2.) Uninstall the app
3.) Re-Install the app
4.) Re-Enter your VIN
5.) Re-Activate the app
6.) Make sure notifications are turned on
and then, wait for it, wait for it --
Go back to the iPhone Screen and Long press on the Toyota App Icon
This should come up:
If you press Unlock, the car WILL unlock
If you press Lock, the car WILL lock
If you press Start Engine, you may get an error message -- at least I did.
But, hey, things are better!
1.) Remove the car from the app
2.) Uninstall the app
3.) Re-Install the app
4.) Re-Enter your VIN
5.) Re-Activate the app
6.) Make sure notifications are turned on
and then, wait for it, wait for it --
Go back to the iPhone Screen and Long press on the Toyota App Icon
This should come up:

If you press Unlock, the car WILL unlock
If you press Lock, the car WILL lock
If you press Start Engine, you may get an error message -- at least I did.
But, hey, things are better!