Failed Gateway Module May Cause Lack of Audio/Cell Phone Functionality on Mercedes-Benz E350

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

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Average mileage: 75,792 (25,000–133,000)
6 model years affected: 2006, 2007, 2008, 2009, more2010, 2011
17 people reported this problem
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problem details
2011 Mercedes-Benz E350 25,000 mi,
No audio/phone/navy off and on...
2007 Mercedes-Benz E350 133,000 mi,
Audio gateway never sleeps and drains battery. Gateway now completely failed and dealership wants $2,295.00 (not inducing labor) to fix it.
2006 Mercedes-Benz E350 123,000 mi,
Radio was going in and out, just shutting off coming back own for about 2 weeks and finally just went completely out...strange thing is,I had no issues until after I had my B service done at the dealer...Uhmmm
2009 Mercedes-Benz E350 90,000 mi,
No audio. Only an odd "tick" "Tick" "Tick tick" sound alternating from each speaker. Command unit displays fine, satnav, radio, etc, but no sound at all other than that described above.
2011 Mercedes-Benz E350 81,000 mi,
No sound or blue tooth phone voice. Appears it is a Gateway Module problem. $800 to install new gateway.
2011 Mercedes-Benz E350 73,427 mi,
No sound, radio, CD, phone. Everything else works fine, Navigation, system settings... etc.,
2006 Mercedes-Benz E350 49,000 mi,
No audio, no nav display, no cell phone funtion