BBALLER

I have a 03 s 500. I turned off my audio when getting out the car, I came back to the car 15 minutes later turned the power back on and now I have no sound from anything. The radio comes on but no sound, cd doesnt even try to play, telephone puts up a error message and voice control cant be heard not even the initial beep sound it makes before saying a command any clue what the problem is???

kenstudios

Sounds like the Bose amp is dead. Check your fuses to ensure there was no power disruption to the amp.

BBALLER

how do i check to see if the amp is dead?? I was playing music at a high interval just to see what the systm could do..I turned the car off and removed the key but still nothing, I didnt see a fuse for the amp, but i checked car audio fuse and sound system fuse but there was no problem there. I only checked two fuses could it be any other fuses? or anything that just became unplugged?

qriousrich

take off your car phone and see if it works. Also try to turn off your radio then turn your phone on while in the cradle the car started. This works for me cause I've isolated this problem a while and it occurs once in a blue moon for me. Don't ask me how this happens but thats how I fixed it since I installed my phone in.

RICH

bamberger_1

Stupid question but you never know. How about the "Mute" button?

DRTYLNDY

This happened to me as well some time ago. It is the PSE for the phone which causes the problem. Under the rear seat remove the fuses for the radio I believe and plug it back in and it should reset itself. Hope this helps it worked for me.
Johan

PA55AMG

My 06 S55 did that, and the dealer was able to do a full reset of the amp.
The shop foreman said it might do it again and that I would need a new amp.
So far, it has been fine for several months.

The other thing the radio has done: sometimes when I turn the radio off, the display turns off, but there is still sound. I push the button again and the display comes back on-push it again and it turns off. It seems as if the head unit and the amp lose communication with each other.

BBALLER

[QUOTE=DRTYLNDY]This happened to me as well some time ago. It is the PSE for the phone which causes the problem. Under the rear seat remove the fuses for the radio I believe and plug it back in and it should reset itself. Hope this helps it worked for me.
Johan[/QUOTE

This fixed the problem thanks!!!!!!!!!!!!!!!!!!

PA55AMG

When you say under the rear seat, I assume you mean in the trunk behind the rear seat?
I do not have a phone in my car, and when I took the car in they were messing around in the trunk and they also had the MB computer hooked up under the hood.
It is nice to know this is a DIY fix.

bamberger_1

The phone control unit (PSE) is under the rear seat bench (passenger side), not the back rest (there is the gas tank).
In the trunk driver side there ist the Bose amplifier and the CD-changer.

PA55AMG

Interesting that a phone problem can cause the same problem that I had in my car with no phone.

kenstudios

Since you are just re-setting the system, you can just disconnect the battery and let the system re-boot. Turn your steering all the way left then all the way right to re-set all those errors that come with a disconnected battery and see if it re-set itself. Works most of the time.