Though my 4/4 is somewhat older; I replaced my inertia switch a number of years ago.
The old one kept tripping for no apparent reason, when the car was about 3 years old.
I don’t recall the cost of the new one, but it was not expensive.
The replaced switch is now 12 years old.
Just at thought! As your +4 is so new, it might be worth just chatting to your dealer to check if disconnecting to replace, will upset any of the electronics?
