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What causes this part to fail?
I bought this part 11/2/2020 and it has already failed. Hall sensor/speed sensor for cruise control. I did all the testing and checked wiring to the ecu, by pulling EVERYTHING out: dashboard, ecu, passenger foot well, etc. to test everything and all was good. I didn't think it would be this part because it wasn't that long ago that I replaced it and I don't see where it would receive much wear and tear, but when I put in another one from a spare vehicle cruise control was restored. Anyone know why or what is it in these that fail? Part still looks brand new.
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1990 190E 3.0L
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