Power window excess force limiter, function - GF72.29-P-3014SX

MODEL 221.0 /1 up to Model Year 8 

Function requirements: 

• Power window normalized

Function 

When the window is closed with the

• Left front power window switch (S20/1s1)
• Right front power window switch (S20/1s2)
• Left rear power window and side window roller blind switch (S20/1s3)
• Right rear power window and side window roller blind switch (S20/1s4)
• Power window switch, passenger (S21/2)
• Left rear power window switch (S21/3) and right rear power window switch (S21/4) (without code (297) Roller sun blinds in rear doors, without code (413) Panoramic sliding roof and without code (540) Electric rear window roller blind)
• Left rear power window and side window roller blind switch (S21/21s1, S21/21s3, S21/22s1 or S21/22s3) (with code (297) Roller sun blinds in rear doors, with code (413) Panoramic sliding roof or with code (540) Electric rear window roller blind)

the power window motors (M10/3, M10/4, M10/5 or M10/6) are monitored by the corresponding door control unit (N69/1, N69/2, N69/3 or N69/4) in each case.

When a deceleration or stop is recognized in the area between 230 mm and approx. 3 mm of the window opening, the corresponding power window motor is cut out or the direction is reversed.

Manual closing 

If the door control unit recognizes pinching, the operation is interrupted.

When a new request is present within 2 s, interruption is accomplished again. When a request is again present within 2 s after the second stop, the window is closed without excess force limiter.

Automatic closing (power window switch held down) 

If the door control unit recognizes pinching, the operation is interrupted and the side window is opened approx. 20 mm. When a new request is present within 2 s, the operation is again interrupted and the window is then opened approx. 20 mm.

When a new request is recognized within 2 s, after the 2nd request, the actuation is terminated.

Automatic closing (power window switch released) 

If the door control unit recognizes pinching, the operation is interrupted and the side window is opened approx. 125 mm. When a new request is present within 2 s, the operation is again interrupted and the window is then opened approx. 125 mm.

When a new request is present within 2 s after the 2nd request, only manual closing is possible.

When the power windows have not been normalized, the excess force limiter is active even when the window rolls up into the upper gasket. This causes the window to reverse (open 125 mm).

If repeated within 2 s after the end of the reversing operation, the excess force limiter is switched off allowing normalization at the upper stop.

	Power window motor, component description	M10/3, M10/4, M10/5 and M10/6	GF72.29-P-6030SX
	Driver-side front door control unit, component description	N69/1	GF72.29-P-6000SX
	Passenger-side front door control unit, component description	N69/2	GF72.29-P-6010SX
	Rear door control unit, component description	N69/3, N69/4	GF72.29-P-6020SX
	Driver power window, outside mirror and trunk lid switch group, component description	S20/1	GF54.25-P-4230SX
	Front passenger power window switch, component description	S21/2	GF72.29-P-6042SX
	Rear passenger power window switch, component description	S21/3, S21/4 On vehicles without code (297) Roller sun blinds in rear doors, without code (413) Panoramic sliding roof and without code (540) Electric rear window roller blind	GF72.29-P-6050SX
	Rear door power window/roller blinds switch group, component description	S21/21, S21/22 On vehicles with code (297) Roller sun blinds in rear doors, with code (413) Panoramic sliding roof or with code (540) Electric rear window roller blind	GF72.29-P-6041SX