I have the original Becker Radio in my 95 E320 Mercedes. Based on the manual, the audio level is suppose to change depending on the speed of the car. Howeverthis feature does not work for me.

I activated the self test mode of the Radio, and drove the car at various speeds. The radio display indicates that it does recognize the change in speeds. The audio level however does not change.

Does anyone know how to activate this feature?

Thanks

Phil

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'95 E300 Diesel, 264,000 Miles. [Sold it]