Can you help me identify the part number for the black plastic trim under the handle trim of the trunk. It's on a R59 though I suspect it's the same for R58 as well and maybe other models.
The rubber is torn and is over molded with the plastic.

 

I had the same issue, here's the part number for it. 51132754240

 

Thanks! It looks like one has to get the entire assembly rather than just the trim?

 

yes, you can only buy the entire trim piece

it comes either primed / unpainted or chrome. It IS possible to take the old one off, separate the colored cover piece and swap with the new (dealer did this when mine was replaced under warranty.

Folks HAVE just glued a hunk of old inner tube rubber over the worn piece if the button still works correctly. When I discovered ours was damaged like this I asked Mrs (her daily driver) why she had not told me so I could fix .... she did not know there WAS a button .... always used the FOB!

https://www.outmotoring.com/51132754...2013-2014.html

easy to replace ... 4 torx screws as I recall, and undo the electric connector

 

My micro switch has been gone since i bought the car, i just use the remote.

 

Ah, funny... My wife always have the key in a pocket so she doesn't use the fob to open much at all :p
1. I wish they would have done the part differently to replace.
2. I wish I had noticed it sooner. It's actually not that obvious.