Yep. I have the same deal on my wagon. I personally live with it and it only happens on the freeway when I have been driving 50+ miles...so it hardly ever happens for me. It is definitely a connection behind the wheel.

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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