Audio system problem
Thread Starter
Junior Member
Joined: Feb 2009
Posts: 19
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From: New York
2007 GL450; 2005 TL; 1986 IROC-Z28
Audio system problem
I'm having an odd problem with the audio system. It seems to appear when there are a series of short errands or stops. When you get back in the car and start it there is no sound from the audio system regardless of the source - radio, cd. If the car is then parked for an extended period of time (half hour to an hour) it works fine again. The real problem is it's very intermittent. I've tried to recreate it and can't, yet it's happened four times over the past couple of months. I have the HK sound system with Nav, the Bluetooth puck, voice commands. Since it's happened to my wife recently I've told her next time it happens to disconnect the Bluetooth puck and see if it changes anything. When it happened to me I don't remember if the phone was connecting either. I'm grasping here, but I know the drill - if I go to the dealership with this one I'm sure they won't be able to recreate it but it will happen to me the very next day. Anyone run into this before?
Junior Member
Joined: May 2009
Posts: 31
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From: Northern Ireland
GL320 CDI - Obsidian Black
I can't say specifically - but you might want to consider this.
In my last car ( an Audi as it happens) I had a similar sounding problem.
After some pain diagnosing it was traced to the head-unit overheating.
The head unit was replaced under warranty.
In my last car ( an Audi as it happens) I had a similar sounding problem.
After some pain diagnosing it was traced to the head-unit overheating.
The head unit was replaced under warranty.
Banned
Joined: Feb 2008
Posts: 164
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From: Columbus, OH
2008 GL 320 CDI
I'm having an odd problem with the audio system. It seems to appear when there are a series of short errands or stops. When you get back in the car and start it there is no sound from the audio system regardless of the source - radio, cd. If the car is then parked for an extended period of time (half hour to an hour) it works fine again. The real problem is it's very intermittent. I've tried to recreate it and can't, yet it's happened four times over the past couple of months. I have the HK sound system with Nav, the Bluetooth puck, voice commands. Since it's happened to my wife recently I've told her next time it happens to disconnect the Bluetooth puck and see if it changes anything. When it happened to me I don't remember if the phone was connecting either. I'm grasping here, but I know the drill - if I go to the dealership with this one I'm sure they won't be able to recreate it but it will happen to me the very next day. Anyone run into this before?
Junior Member
Joined: Jul 2007
Posts: 31
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From: Phoenix AZ
2008 Barolo Red GL450, P1, 19" pkg, ipod, ill. door sills, running boards, trailer hitch, keyless go
Not exactly what you're describing, but one time, after starting the car, all audio sources (radio, sat, ipod, telephone) were mysteriously static-filled, to the point of being unlistenable. Turned the COMAND completely off - no effect. Turned the car off - no effect. A few hours later, I re-started the car and all was back to normal. Hasn't shown up since, but I'm sure the gremlin will eventually return. They usually do.
Thread Starter
Junior Member
Joined: Feb 2009
Posts: 19
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From: New York
2007 GL450; 2005 TL; 1986 IROC-Z28
Thought I would post the resolution to this problem. After replacing the amp the problem went away for good (I hope). It took three tries - first time they upgraded the software on COMAND, second time they thought it was the fan cooling the amp. It got to the point that I could reproduce it at will, which was very useful because I was able to drive in with the problem. Matter of fact after picking it up the second time I pulled out drove two or three miles, parked in a lot, turned off the ignition waited five minutes and started it up with the radio on and it didn't work. Drove back with it like that, told them to keep until they fixed it and gave them my exact route. They also reproduced it. Hopefully gone for good!
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Joined: Dec 2001
Posts: 3,430
Likes: 187
From: USA
W140 Mercedes S350, W221 S550 sport
Thought I would post the resolution to this problem. After replacing the amp the problem went away for good (I hope). It took three tries - first time they upgraded the software on COMAND, second time they thought it was the fan cooling the amp. It got to the point that I could reproduce it at will, which was very useful because I was able to drive in with the problem. Matter of fact after picking it up the second time I pulled out drove two or three miles, parked in a lot, turned off the ignition waited five minutes and started it up with the radio on and it didn't work. Drove back with it like that, told them to keep until they fixed it and gave them my exact route. They also reproduced it. Hopefully gone for good!
