Was using the license plate holder that screws into the front tow hook from http://www.usmillworks.com/ on my 2014 P4S with Park Assist with no problems. I took it off the old car and installed it on my new 2018 P4S w/Park Assist without any changes and the parking sensors on the bumper see it and cause a persistent alert.

Has anyone with a 2017/2018 with Park Assist used a tow hook front plate holder and found a location where the sensors don't see the plate? My holder has the flexibility to connect the plate to the tow hook bolt in various locations, just trying to avoid trial and error if someone has found something that works.

Hopefully there is a way because I really don't want to drill holes in the front bumper.

 

I've never needed a front plate in California.