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May 1, 2013 Service bulletin

In all audio modes (radio, CD, AUX-In, etc.), the audio output is distorted

BMW technical service bulletin 651310 for 2007-2013 BMW 328I, 2006 BMW 325I and 2009-2014 BMW Z4 and others.

Bulletin number
651310
Component
Equipment
Summary
In all audio modes (radio, CD, AUX-In, etc.), the audio output is distorted. It is more noticeable with high bass and high audio volume settings. There may also be an intermittent interference noise coming from the loudspeakers at low audio volume or when the radio is turned off. Audio settings in the RAD2+ (radio professional)

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