Thank you Reckless. Really appreciate your answer.

I recently replaced my front axle boots (both left and right) from a shop (not dealer, but a bimmer specialty shop). After the CV boots replacement, I noticed both my head lights go up and down on the highway randomly. After checking these posts, I suspect this is related to that sensor and went back to the shop.

The shop however told me that there is no way they could installed it wrong since there is only one way to install it.