Failed Gateway Module May Cause Lack of Audio/Cell Phone Functionality on Mercedes-Benz CLS550

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

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Average mileage: 26,000 (22,000–30,000)
4 model years affected: 2007, 2008, 2009, 2010
7 people reported this problem
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problem details
2007 Mercedes-Benz CLS550 22,000 mi,
blue tooth doesn't always work
2007 Mercedes-Benz CLS550 30,000 mi,
car at dealer, waiting for repair