[theogravity]

Mine also has a physical button, but it only triggers a single wipe. My workflow is usually press physical button, then touch the manual setting on the touchscreen to continuously operate.

[kashyapp]

You don't need to touch the screen after that. The left scroll wheel can navigate through the menu.

I discovered this by chance. And it seems to be subtly mentioned in the manual.

https://www.tesla.com/ownersmanual/modely/en_us/GUID-A5C33F3....