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Home >> BMW >> 2009 >> 528i Standard >> Repair and Diagnosis >> Electrical >> Charging Systems >> General Electrical System - Service Information >> Power Windows >> System functions >> Load cutoff
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Load cutoff

To protect the battery, the power windows will not operate while the engine is being started (terminal 50). Any current power window operation (e.g. one-touch opening) is stopped.

If the battery voltage falls below 9 volts, the power window motors are switched off.