You have a good case but I think it's with the selling dealer. It's wishful thinking but see if they'll compensate your local dealer for the work. If not, bring it up with the regional MB rep. Ideally they'll perform the deferred maintenance. You shouldn't have to settle for a letter from MB stating that lack of documentation will not affect your warranty.

How can the transmission need a fluid change at 39K miles? That's a heck of a 180 from lifetime fill.

Sixto
87 300D

If the OP's car has the 722.9 / 7-speed automatic, the 39K interval is a good idea. Some of the folks over at benzworld advocate even more frequent changes. There are electronic sensors in the valve body of those transmissions which are prone to failure resulting in the need to replace either the conductor plate or entire valve body, which is a $1000-$1200 job out of warranty. Supposedly, frequent fluid/filter changes can extend the life, etc., etc. I'm not sure about that, however-the 722.9 on my wife's '06 E-350 had it's fluid changed at 29,000 and 47,000....and the valve body crapped out at 52,300-"just out of warranty." Luckily the dealer here went to work on MB and got them to cover it. They wouldn't, however, cover the fluid and filter.

To the OP--you were smart to get the warranty--extend it as long as they'll let you.

__________________
Christopher
'06 Mercedes E350 station wagon (silver/black)
'85 Mercedes 300D (black pearl/palomino)
'85 Mercedes 300SD (smoke silver/burgundy)
'79 Cadillac Sedan DeVille

'05 Toyota Camry (because always running is nice)

'85 Mercedes 300D sold back to orig. owner 8-1-06
'84 Volvo 264GL Diesel, owned 2000-2013