Question about 2004 Mercedes-Benz Mercedes Benz E Class

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I have a 2004 E55 and the radio periodically makes a chirping/feedback noise. The noise/interuption last for about 2-3 seconds. Now this had happened a few months ago but seemed to fix itself. Well its now back again. This sound happens whether I'm playing the radio or cd or music through my phone through aux jack. My last option is to replace the radio. Any info would be greatly appreciated.

Posted by arthur on


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Michael Anderson

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It is your phone doing it, it updates itself with the carrier every so often and causes a few seconds worth of RF interference when it does that.

Posted on Jul 22, 2014


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SOURCE: 2004 mercedes c240 alarm sounds for no apparent reason

Hi, You need to replace the alarm siren. It is also a module. It is located in the right front fender well. The reason they go bad is because they are located in a place where they get wet.

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SOURCE: aux input for MP3 player

I'am an M.B. tech- I do not beleive that this radio is mp3 compatable- iknow that the input you are refering to is used for ipod use. It very well could be that the head unit has to be programed(basically informed0 for an mp3- i would call the service dept. and ask to talk to ther best audio tech savay mechanic. Most likley the service writer wouldn.t know or give you false information because they do not stay on top of all the little tecnical changes. This fiber optic system has many programing features- most have to be done with as sds laptop(dealer software only) good luck

Posted on May 25, 2009

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