Model X ultrasonic sensor knocked loose, how to put it back?

[JWM3]

Hi,
My Model X hit the road debris and knocked the ultrasonic sensor loose into the front bumper. The cable is still connected and the car keeps warning me to stop at a slow speed, which means the sensor is working.
How difficult to disassemble the front bumper and put the sensor back? Tesla is estimating $500+ to fix.

 

[pfrass]

I have the same issue- two sensors are dangling behind the front bumper. I took out the frunk, but this does not give access to the sensors. I suspect the front bumper will need to be removed. I am unsure if they are secured by some type of retaining clip, but once access is obtained, I'm sure we could figure out how to use double-sided tape or glue to fix them into place if needed. If anyone has ever done this or has knowledge, that would be appreciated.