If you own a Japanese-import Mercedes-Benz W213 E-Class and experience very quiet, low, or completely silent microphone performance during calls , you are not alone. This is a common issue where drivers can hear others clearly, but their own voice is barely audible or not transmitted at all. This problem makes hands-free calling unreliable and frustrating, especially for daily driving or business use. Understanding the root cause and applying the correct repair solution is es