Hi guys,i was changing the rear brake pads on my 2012 outlander gx4 when i spotted this sensor? with the broken extension,does anybody know what is this meant to do,and from where i can buy another one

Same here ,the red marking is the assembly,and the blue circle is where it snapped from.

What is marked with red is the whole assembly, the blue bit is where it snapped from.

? Thanks

Edit: Found out what it is, is the suspension height sensor wich adjust the automatic headlights..