For US 45's - Check if your car needs service here!
You must bring the car in and they will check if your turbo has been affected by this or not.
Here's how to see if your car is affected by ANY "Service Campaigns":
Anyone should be able to sign up at this link: https://www.mbusa.com/mercedes/owners/owners_online
You enter normal info and your VIN # to register.
After you are set up and signed in, click "My Vehicles" on the left sidebar.
Near you car, you can click "Service Campaigns"
I had no knowledge of this site until now, so anyone should surely be able to do it too!



