Honestly its not worth your time. They all fail at some point, its fact and well known. Just replace it for $50 and be done with it.

KAE or OE MB, do NOT buy URO.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k