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1. A short somewhere in the system, causing too much current to be drawn. Although an unusual failure, this can be dangerous -- 80 Amps is way more than needed to start a nice little fire in your engine compartment.
2. Corrosion of the (aluminum) strip fuse causes an "ohmic contact" with the holding screws, which get hot and melt the aluminum. Use the same gunk that electricians use on aluminum wire junctions. It prevents oxidation of the aluminum, which is the cause of the problem -- aluminum oxide is an insulator.
Jeremy
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"Buster" in the '95
Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
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