2013 Buick LaCrosse Owner Manual - Page 50

2-20 Keys, Doors, and Windows Anti-Pinch Feature If an object is in the path of the sunroof while it is closing, the anti-pinch feature will detect the object and stop the sunroof from closing at the point of the obstruction. The sunroof and sunshade will then return to the open or vent position. To close the sunroof once the obstruction has been removed, refer to "Express-Open/Express-Close" earlier in this section. Periodically open the sunroof and remove any obstacles or loose debris. Wipe the sunroof seal and roof sealing area using a clean cloth, mild soap, and water. Do not remove grease from the sunroof. Vent: Press the rear of the switch (2) to the first detent to vent the sunroof. Press the front of the switch (1) to the second detent to close the sunroof. Express-Open/Express-Close: To express-open the sunroof, fully press and release the rear of the switch (2). To express-close, fully press and release the front of the switch (1). To stop the sunroof partway, press either switch a second time. The sunshade opens automatically with the sunroof. To express-open the sunshade, fully press and release the rear of the switch (3). To stop the sunshade partway, press the switch a second time. To express-close, fully press and release the front of the switch (4). To stop the sunshade partway, press the switch a second time. Dirt and debris may collect on the sunroof seal or in the track. This could cause issues with sunroof operation and noise. It could also plug the water drainage system.