i owner a 1995 c280 the only relay's i know of are by the main fuse box under the hood
for mine i had to unscrew the plastic frame around my fuse box and the relay's are behind that (closer to windshield)
had a blown fuse in one so might be worth lookin at
for mine i had to unscrew the plastic frame around my fuse box and the relay's are behind that (closer to windshield)
had a blown fuse in one so might be worth lookin at