Body - False Power Window Pinch Protection Activation: Overview
Bulletin Nbr: 831-2639 ed. 4Date:...........Februari 2009
Market: all
Pinch protection activates
Cars affected
Saab 9-3 equipped with pinch protection:
4D/5D: M03-
CV: M04-
Background
The software for pinch protection functionality has been improved from M07 in order to prevent the pinch protection from activating, which means that the window cannot be closed even if there is nothing obstructing it. The software is also available for older cars as per above (does not apply to 4D M03).
The software also includes diagnostic and fault diagnosis options (does not apply to CV and 4D M03-M04).
The control module must not be replaced when the pinch protection incorrectly activates, as the fault is not in the control module.
In order to facilitate fault diagnosis, two new tests and new read values have been added into Tech2 (not CV and 4D M03-M04). The tests and read values are oriented toward adaptation performance and mechanical problems. As the pinch protection system is adaptive the adaptation performance is one of the most important parameters. A system with poor adaptation performance is more likely to activate the pinch protection incorrectly.
One of the reasons the pinch protection may activate before the window is closed is that the window's actual position does not correspond to the programmed position. This means that the window lift motor will not stop at the end position but instead will back up a bit.
In the case of customer complaint, the following procedure must be carried out.
Symptom description
The pinch protection activates before the window is closed.
Parts required
As required, see EPC for part numbers.
Note
First ensure the car is fitted with the pinch protection. Lift up the window lift button.
Cars with pinch protection: the button has two positions.
Cars without pinch protection: the button has one position.
WARRANTY/TIME INFORMATION