Are you trying to remove the guts of the MAF?
If so, you will need a Snap-On 25IPR. PN# TTXR25TPE.
Otherwise, the complete MAF will remove with a 7mm or flatblade screwdriver.
DR.D

__________________
Dr.Diesel -
Shop Foreman
Master Guild Mercedes-Benz Technician.

Think the dealer is expensive? Do you know how much it costs to train a dealer tech? Or buy the required MB special tools to have on hand?