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The 4-matic part(s) consist of transfer case, locking rear differential, & the front differential. The transfer case is a bolt-on that has it's own drain & fill plugs. It does use ATF.
OF course there is a computer & hydraulic componets as well.
The trans modulator has a rubber cap that can be removed & then the key underneath can be pulled slightly out & turned counter-clockwise to soften the shift.
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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
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