Thank you. Car being 25-years old, that's probably a good guess. I'll try cleaning it first.

Where can I purchase "dielectric grease"? Auto parts store? Any specific brand I should stick with?

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-Steven

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1959 190b, totalled
1968 220D, sold
1969 230/8, sold
1980 240D manual, gave away at 300k (stupid me)
1985 190D 2.2 manual, gave away to a youngster
1989 300CE, sold when I retired - major regrets