The windows & blinkers aren't on the same circuit! The blinkers are controlled thru the combination relay(biggest) in the rear of fuse box. The power windows should have 2 fuses that power-up lt. rear & rt. front, & rt rear & lt. front windows.
Many times the hazzard switch sticks & wont allow the blinkers to work!
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)