If you are talking about the '90 version, that is the first generation 4Matic. I think MB stopped using it in '92 or '93(?). It was re-introduced as the current electronic version in '98. From '94 to '96 they used the lousy ASR system. Awful in the snow even with Hakkapeliitta 2s loaded up. I'm not sure what happened with the 5 speed transmission in '97 though. I always wondered how the first generation 4Matic worked. Sounds cool actually.

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dtf
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (228,000)
1999 E300 Turbodiesel ( died @ 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles) rusted frame - sold to chop shop
2011 Audi A4 Avant (165,000 miles) Seized engine - donated to Salvation Army
BMW 330 xi 6 speed manual (175,034 miles)
2014 E350 4Matic Wagon 128,000 miles
2018 Dodge Ram 21,000 miles