If you go to Mercedes dealership they will give you this fuse for free. It is like a 2 cent item. They gave me one when I needed it, and they also give me all the spare fuses I needed, and some extras to keep in the car just in case for free too (and I hadn't even bought my car from them).

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Jason Priest
1999 E430
1995 E420 - retired
1986 420SEL - retired