s500 if your car is anything like my 85 190 than the fuses are in the engine compartment, but even if its in a different place, on my fuse box cover there is a label telling you what each fuse is for, but even without knowing that you should be able to look everywhere for a blown fuse. but if you hear the pump going when you lock the trunk it might be more than a blown fuse, but its a good thing to check anyway, who knows what you might find.

cdt

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2002suzukiGSF600S
1985 190e 2.3