Less than 30 minutes to get to that blower..

Remove passenger side under dash panel & you will see the blower motor cover..remove that cover & you will see the blower motor w/regulator..

OLD style motor has METAL housing & small regulator..REPLACEMENT motor has plastic housing & very large heat-sink regulator.

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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