Thanks for starting new thread Toobad, normally when work is carried out under warranty the part numbers are not given to you.
If any owner has problems with their dealers pleading ignorance about the fix, just call customer services who I have found are good at educating the dealers. Dealers spent months pleading ignorance regarding tyre skipping when it was general knowledge.
2017 GLC AMG43 premium plus, night pack, leather, intel lights, 360 camera, side steps. = sadly gone
Now GLE450 Premium plus, Selenite, Black/White Nappa leather, Tech plus pack, Driving assistance pack, Tow pack, Off road pack, 22 inch wheels.