The fluid has no recommended service interval. If it were mine, no I wouldn't change it. BUT that's my opinion, OK?

IF you really intend on keeping the car a significant amount of time or miles beyond this point, I can at least understand why you want it changed.

You may have to "convince" the dealer to do it. I wouldn't DIY it, the level is too critical.

There is a small magnet MB wants them to put in the bottom of the pan if they open it up, i can get the part number if you want it.

Gilly