Someone I know proceeded to dump the tranny fluid on his '07 GL450 and change the filter, then discovered that there is no apparent way to replace the fluid. There is no obvious dipstick tube to put fluid back in.

Even though MB went cost cutting nuts by eliminating dipsticks, there still has to be a way to replenish the fluid. How did the factory put the fluid in, in the first place?

Any help would be greatly appreciated.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member