Synchronization of power windows, function - GF72.29-P-4003GH

MODEL 163 as of 1.9.01 

Prerequisites for synchronization 

• when dysynchronization  has occurred.

Synchronization is a prerequisite for the one-touch up feature  of the power window, with excessive force limitation.

The synchronization  links the counter status for the position  recognition with the actual position of the side window.

If a window is not synchronized the end position of the corresponding side window is not known and the one-touch up feature  cannot be performed.

Performing synchronization 

Adjust the corresponding window with the power window switch  in the upper lock-up position "Window closed  " and continue to actuate switch using manual up feature. The control module then sets the counter for position recognition to zero when it recognizes that the motor is locked up for min. 0.3 seconds  . The window is now in the synchronized state, i.e. the control module can switch off the motor before reaching the mechanical stop when opening and closing the window.

Automatic resynchronization 

In the one-touch down mode the window is first moved to the upper lock-up position and resynchronization is performed. This feature prevents the motor from turning back when self-locking is insufficient following one-touch up operation to the upper lock-up position.