My power windows just quit working all at the same time. None of the windows will activate, the sun roof is dead as well. They all worked fine when I shut the car off. The next time I went to start it - windows all dead. Sunroof dead. Power seats still work though. No blown fuses that I can see.

Relay ?

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Andy_M
'98 W140 S320 Black/Black
'06 W164 ML500 AMG White/Grey
'03 Porsche 986 Midnight Blue/Grey

Replace the fuse for the windows, might be 2 or 3 that operate the windows. I have a 300 TE windows stopped working checked the fuses, looked alright ordered a new relay and still didnt work, few days later started to rain wipers didnt work, checked my manual and wipers are on the same circuit as windows, checked fuses none were blown, I replaced 3 perfectly good looking fuses and everything works fine now Go Figure!!!!!!!!!!

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'05 Ford Escape 100,000 miles
'87 560SL 92000 miles
'89 300TE 199,000 miles
'02 Audi TT 100,000 miles
'00 Ford Excursion V-10 121000 miles
'92 Mercury Capri 100000 miles
'02 BMW 325XI 60000 miles
'92 230CE 160000
'87 BMW 535SI 160,000 miles
'93 Rinker Captiva 209
5 Kids
2 Dogs
1 Wife

Yeah, I recommend changing out the fuses as well. Sometimes they look fine, but could still be damaged. That happened to me once on one of my old MBs I had before.

Good luck!

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2004 Toyota Sequoia Limited 4wd
1991 Lincoln Town Car Executive
1991 Cadillac Sedan DeVille
1988 Mercedes 300SEL
1972 Chevrolet Caprice Kingswood Estate 9-passenger wagon
1973 Pontiac Grand Ville
(Prior MB's: 1974 240D, 1985 380SE, 1984 190D, 1993 400SEL)

Computer controlled systems...the window/sunroof computer in under the back seat.
Make sure that it has 3 power supply wires.

__________________
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

Thanks Guys. That's wierd on the fuses....

__________________
Andy_M
'98 W140 S320 Black/Black
'06 W164 ML500 AMG White/Grey
'03 Porsche 986 Midnight Blue/Grey