System functions: Mounting/damping
WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
To achieve the desired sound quality, the CD/DVD changer's playback mechanism is spring-mounted. During normal driving, shocks are adequately damped in order to balance out road-surface irregularities. For the improvement of quality, the CD/DVD changer is also fitted with an electronic correction device.
In the case of extremely hard suspensions or at high speeds, vibrations can occur which will cause the playback mechanism to come into contact with the housing. The electronic correction device cannot compensate for such flaws and there will be a resulting reduction in quality.