I have a 2008 Range Rover Sport. My mechanic replace the rear pads and rotors. The rear rotors have a hole that you can insert you screw driver into so you can adjust the tension of the shoes. When I returned home after the repairs were complete I saw the cap that covers this hole is missing. Is this something that I need to go back to have dug out of the dumpster or is this part more for cosmetic purposes?

 

The rear rotors have a hole that you can insert you screw driver into so you can adjust the tension of the shoes. there is no adjustments on disc brakes but if there is a dust cover off it should be replaced

 

The RR Sport has the parking brake shoes inside the rotors. That plug is mostly cosmetic, but since the parking brake on those things is prone to corrosion related failures I would ask for the plugs. If they have lost them, have them order new ones for you.

 

my mistake; i did not know they using the rear brakes, i always liked locking the drive shaft

 

It's electronic to boot, so they're prone to failure. Apparently using a lever is too plebian in the designer's eyes.