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Home >> BMW >> 2004 >> 760i >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Central Body Electronics - Overview - 7-Series (E65/E66) >> Central Body Electronics >> Principle of Operation >> Smooth Rundown

Smooth Rundown

Smooth rundown describes running down of the power windows with a linear decrease in the infinitely variable speed until the window is at a standstill. This function is used when approaching the end positions (in both automatic and manual operation) of the lower and upper stops.

The smooth-rundown travel is about 15 mm on the downward travel and about 30 mm on the upward travel.

Fig 1: Window Smooth Rundown Graph
G03390898Courtesy of BMW OF NORTH AMERICA, INC.