I have a 2016 c300 with 57k miles. The dash told me I need service A6, but when I called the dealer they told me it would need the 60k B service. I understand this one comes with the transmission fluid change in addition to everything else 10.0.0.0.1 192.168.1.254. My question is why is my dash saying A6? Based on the year of the car and mileage I’d think it would be pointing me to the 60k B service which the dealer is saying I need.