What is this button on the trunk of my SL550? I have looked in all the places I know but can’t find what function it has…or is it just a plug?

 

Someone said it is the location for a back up camera.

 

Thanks, I’m hoping that is what it is. I’m planning to install a wireless backup camera but don’t want to tear into a critical area.

 

With Keyless Go that is the button which locks unlock the vehicle from the rear of the car; without Keyless Go it does nothing.

 

Woah, thanks, I have keyless go on this car. I guess I won’t drill it out! 🤭

 

Now the question is, where to put the backup camera. I don’t really care for those cameras on the license plate. 🤔

 

previous owner put mine to the side of the left license plate light

 

Bracket locates the camera behind the plate. It fits tightly so no screws or adhesive.

 

A friend of mine used that button for the back up camera. As said here this button is in use for cars with keyless entry so if you do not have that i cant see anything wrong in installing a back up camera there