GL Class (X166) 2013-2015 after facelift became GLS (X166)

Bluetooth Phone Quality Issues

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Old Jan 2, 2015 | 03:20 PM
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Bluetooth Phone Quality Issues

Just received our ordered 450 and love it. However I noticed something strange today. When I called my wife in the car it sounded as if she had the window open and the speaker was picking up wind and/or road noise. Almost sounded as if she was riding the bumps. She said it was perfectly quiet in the cabin. I could hear the noise dissipate some when she came to a light, but still a sound of wind or road noise the whole time I was talking to her. Also had her turn the air off to make sure a vent wasn't causing this. Anyone else had or heard of a similar problem? Thanks!
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Old Jan 2, 2015 | 04:08 PM
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Hmmm....was this just a single phone call or has this happened more than once or with different phones?

(I'm wondering if this was perhaps a cell issue rather than a MB or Bluetooth issue as we have never experienced this with our GL.)
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Old Jan 2, 2015 | 04:48 PM
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Yep, made the call a few different times from a land line and my cell and still had a lot of noise. It wasn't to the point that we couldn't talk, but I reference the sound to that of a baby ultrasound in the background.
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Old Jan 13, 2015 | 04:03 PM
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On my 2015 GL450, I have not had any issues talking via bluetooth connection.
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Old Jan 14, 2015 | 08:37 AM
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Have a 13 GL450....have found the quality of the phone and the Mbrace audio interface to be "poor".....my 14 Ford Fusion sounds MUCH better
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Old Jan 26, 2015 | 11:06 PM
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Originally Posted by piper
Just received our ordered 450 and love it. However I noticed something strange today. When I called my wife in the car it sounded as if she had the window open and the speaker was picking up wind and/or road noise. Almost sounded as if she was riding the bumps. She said it was perfectly quiet in the cabin. I could hear the noise dissipate some when she came to a light, but still a sound of wind or road noise the whole time I was talking to her. Also had her turn the air off to make sure a vent wasn't causing this. Anyone else had or heard of a similar problem? Thanks!
On my 2015 550, the quality of the phone using Bluetooth is excellent. In fact, it's significantly better than my experience with my 2013 M3 or 2014 q7. Something must be wrong.
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Old Jan 27, 2015 | 10:43 AM
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Originally Posted by blittle
Have a 13 GL450....have found the quality of the phone and the Mbrace audio interface to be "poor".....my 14 Ford Fusion sounds MUCH better
Ha. We have the same cars. I have 13 GL450 and a 14 Fusion Energi. I agree, the Fusion Bluetooth interface is better, but the GL doesn't sound bad at all.
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Old Jan 27, 2015 | 08:54 PM
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Originally Posted by piper
Just received our ordered 450 and love it. However I noticed something strange today. When I called my wife in the car it sounded as if she had the window open and the speaker was picking up wind and/or road noise. Almost sounded as if she was riding the bumps. She said it was perfectly quiet in the cabin. I could hear the noise dissipate some when she came to a light, but still a sound of wind or road noise the whole time I was talking to her. Also had her turn the air off to make sure a vent wasn't causing this. Anyone else had or heard of a similar problem? Thanks!
There's a service bulletin for your issue via Bluetooth with noise in the background.. The comand software has to be updated.. The 2015s software should have been updated already.... Also be aware of iPhone iOS 8 issues with MB software...

Last edited by evansw220; Jan 27, 2015 at 08:57 PM.
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Old Jan 27, 2015 | 10:13 PM
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My 2014 450, manufactured at the end of June has excellent Bluetooth sound both ways. Don't know if it could really be any better.
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