I believe this is the problem with mine, I’m going to try and clean it before replacing it

https://www.autohausaz.com/pn/14401715-0018307784?utm_source=google&utm_medium=cpc&utm_ca mpaign=feedmobile_Mercedes&gclid=CjwKCAjwgb6IBhARE iwAgMYKRjbTK9VswBNzzjspRUqCFoh5i-m1Iv-U9jcrYeqE_j3XyB5Y3v4WBRoCGm0QAvD_BwE&fbclid=IwAR2Y _6hUS8nBMUptM6e2Vwi2SCYS0AHksLOSai4qOtLzHddEltfwkC 7SXak