Will the model y trunk kick sensor open the trunk when backing into a spot and the car approaches a curb?
I have not experienced this. The only issue (if you can call it that) that I have had is I once accidentally triggered it closing when my wife and I were making multiple trips to load up the back. I must have triggered it trying to get out of her way after dropping my stuff off in back. I heard it trigger and stopped it from clobbering her on the head. That's my fault, not the sensor's.
The car would likely be locked while you are backing in anyway. If the car is locked the door should not open from the sensor.
For those that have installed it, do you like it? Does it work well?
My experience has been great. I doubt that you will spend $90 on any other accessory that gives you more value for the money. Just two nights ago I had my hands full approaching the trunk of my M3. It is not even powered let alone kick-sensor enabled. What a pain. First world problem for sure but one that that $90 and a few hours of your time can solve for the MY.
The installation itself is not necessarily easy but if I can do it most people likely can. Running the wire through the rubber boot at the top of the hatch was particularly difficult for me. Also I did not know the proper way to remove the push-pin trim holders which cost me some time to figure out (pull up the middle piece of the pin and they slide out with no effort). I could install a second sensor much faster. I would not look forward to running the wire through the rubber boot again.