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Home >> BMW >> 2017 >> X3 sDrive28i >> Repair and Diagnosis >> External Pages >> Different car >> Section 671 (Functional Description - Information & Entertainment Systems) >> Information & Entertainment System - Functional Description >> Bang & Olufsen High End Surround Sound System >> System functions >> Electronic power-down

Electronic power-down

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.

The High End audio amplifier is connected with "terminal 30" and ground for voltage supply. The audio amplifier has an operating voltage range of 7.5 to 16 volts at the control input.

At voltages of less than 7.5 volts at the control input, the audio amplifier is automatically switched off. This ensures that the audio amplifier does not remain switched on, for example in a parked vehicle.

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