Welcome to the forum.

If you truly have one of the last trap-ox in the world still on the vehicle, it is my understanding that you can bring it to a Mercedes dealer and they will replace it at no charge to you. You might even get a new turbo to go along with it.

The dealer is the first place to start to get this device eliminated. You may need to educate the dealer as to exactly what the device is. It's probably been that long since they have seen one.