I've reviewed the excellent dissussion on auxilary fans that "Vince" initiated a few years back. I do not think my fans are coming; when I looked at the relay panel, I could not find a relay like Vince posted at the end of his thread - none of mine have a fuse attached. Likewise, I could not find the "blue relay" shown in the picture. Is there another location for the auxilarly fan fuse besides the general fuse box, i.e., in the trunk, etc.? I have decent AC so I do not think it's low on refrigerant.
Thanks
Socks E420

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SocksE420
97 SL500 74K
96 C280 110K(SOLD)
96 E320 111K(SOLD)
95 E420 107K(SOLD)
88 300TE 142K(SOLD)
77 300 D 144K(SOLD)

1996 & later W202's didn't use relays. They have a fan control module
located behind the left front wheel on the frame rail, under a plactic cover.

__________________
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 MBDoc - how do I test the low speed fan?
Socks

__________________
SocksE420
97 SL500 74K
96 C280 110K(SOLD)
96 E320 111K(SOLD)
95 E420 107K(SOLD)
88 300TE 142K(SOLD)
77 300 D 144K(SOLD)

The fans are constantly variable in speed, controller will make all variations in speed from signal from A/C controller.

__________________
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