how many miles on vehicle?

PARTS:
1) pad wear sensor (maybe)
2) brake cleaner
3) old toothbrush or brake brush cleaning tool
4) Mercedes Benz backing plate grease
5) C-clamp or similar to press piston back into caliper
6) brake pads ( OEM are very good - but may not be the best for drivng desired)
7)new guide pin bolts ( these should come with OEM pads )
8) check brake fluid level in reservior - may need a turkey baster to siphon off excess

disc thickness minimum is 19.4mm, minimum before repair 20.4mm

Guide pin bolts torque to 18 lbf ft

wheel lug nut 81 lbf ft

The cars OEM tool kit should have a wrench that fits in narrow spaces if needed.

have your vin # handy if buying parts at dealer.