They are in the service booklet that came with your car.
If you do not have the service book, register at the Mercedes Benz site and they should have it. You can also call 1-800-FOR-MERC and they can send you one. The intervals can be found online but it is nice to have the book to keep notes in.
If you do not have the service book, register at the Mercedes Benz site and they should have it. You can also call 1-800-FOR-MERC and they can send you one. The intervals can be found online but it is nice to have the book to keep notes in.