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Failed Gateway Module May Cause Lack of Audio/Cell Phone Functionality on Mercedes-Benz E550 4MATIC

Problem Description and Possible Solution

Lack of audio or cell phone functionality may be related to the failure of the audio gateway module.

Problem Data
RepairPal Verified
Average mileage: 7,600 (7,600–7,600)
4 model years affected: 2007, 2008, 2009, 2010
5 people reported this problem
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Audio (Radio, Phone, CD) intermittently goes silent. All software updated on auto and still recurs. Dealership says it needs input from Mercedes and that is where it stands. I am going to suggest that it try to replace gateway module based on these reports.
ROW