Rear window oper??
The only other thing that all windows share is power supply(relay) & the ground. Relay powers both fuses!! Do any of the windows work? Relays are under plactic cover behind fuses. Pwr. window relay has the "letter" F beneath it. Most of the relays there are the same.
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)