I get them covered all of the time, up to 120k miles at the dealer in Atlanta...RBM..
Don't make a big fuss YET. Go talk to Mr Cristen. He is a service advisor that will help you.
The labor time is 2.2 hours. End of story. Someone is trying to rip you off!!!
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS