I was wondering if anyone has experienced intermitted loss of the low bass tones of original bmw radio-setup? It sounds like the loudness-function is turning on and off randomly.

Is there such a function on a standard small screen headunit? And how can i solve this, drives me nuts sometimes....


(Yes i searched...)

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'01 E53 4.4i exe sport >155K-miles [daily driver]
'00 E46 323i sport >90K-miles [sold]
'01 LR freelander 2.5 V6 >90K-miles [sold]