that fix works great for old switches that have dried lube, but they will quickly dry out again. you should pull the switches. spread out a large white towel and gently open them up. rinse out the switches, and replace the electrical grease.
the #1 reason these switches fail is soda/tea dried up inside them...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
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1987 190D 2.5Turbo
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1987 300TD
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