I have 96K miles on the W210 E320. As I approach the 100K milestones, I took the car in (dealer) for transmission service and hope that if any serious problems uncovered may be corrected 50/50 with MB. I must be daydreaming
I assume the oil drain method:
Drain and remove pan,
Inspect solenoids and disc packs,
Remove and replace filter and gaskets, and
Refill
No, I got transmission flush. Am told that is the “official recommended MB way”. Correct?

I do not object to flushing but I hope flushing do not disturb the wear particles and contaminants (in their sleep at the bottom of the pit), and flush them into and between the disc packs. Not able to see the condition of the solenoid and disc pack concerns me. However, flushing could be a real better method of cleaning out the system. Draining unlike the flushing method could introduce a new gasket leak path into an otherwise dry joint.

What do the GGG (gals, guys, and gurus) think?

May be next time (2 yrs/40K miles later), I DIY it?

Oh BTW, HB was replaced earlier covered by the service recall. Nice. Due credits to the hell raisers on this forum (hear, hear!) and belatedly to uncle DCX.