Your car has a "comfort" computer that operates the windows & sunroof. If this computer fails then all functions will stop.
There are 4 fuses involved in supplying power to this computer & ALSO a relay(clear) that powers the computer up.
Fuses 9, 2, G, & H.
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)