What Causes the Power Window Regulator of the Buick LaCrosse to Fail to Operate?
3 Answers
The failure of the power window regulator in the Buick LaCrosse to operate is caused by damage to the window lift motor components. Below is relevant information: 1. Body Dimensions: The Buick LaCrosse has a length of 5026mm, a width of 1866mm, and a height of 1459mm. 2. Example: Taking the 2021 Buick LaCrosse as an example, it belongs to the midsize car category with a wheelbase of 2905mm, a fuel tank capacity of 55 liters, and a curb weight of 1535kg. 3. Configuration: The 2021 Buick LaCrosse features a MacPherson strut front suspension and a multi-link rear suspension. It is equipped with a 1.5L turbocharged engine delivering a maximum horsepower of 169ps, a maximum power of 124kw, and a maximum torque of 250nm, paired with a 9-speed automatic transmission.
The other day, the passenger window of my old LaCrosse suddenly got stuck. I've looked into this issue. It's most likely due to a burnt-out window motor or poor switch contact, which often happens after summer rainstorms. First, check if the other windows are working normally—if none of them move, it might be a blown door fuse. Wiring degradation is common in older cars; last year, mine had a similar issue due to oxidized wiring connectors causing the passenger window to fail. Another possibility is grit in the window tracks or hardened weatherstripping jamming the glass. As a temporary fix, try tapping the door—some car owners say it works. But for a permanent solution, you'll need to remove the door panel for inspection. Last time, I had to replace the window track seals to restore smooth operation. Don't delay fixing this—imagine the hassle if it rains and you can't close the window.
I've encountered window regulator issues twice in five years with my LaCrosse, mostly electrical faults. The first thing to check is the corresponding 15-amp mini fuse in the fuse box - it blew last winter. The master switch assembly is also a common failure point due to contact wear. If the motor hums but the window doesn't move, it's likely either a cable derailment or rusty/ broken brackets. For initialization issues, simply relearn the procedure: hold the down button for 5 seconds after lowering completely, then hold the up button for 5 seconds after raising fully. Be careful with door panel clips if DIY-ing - I broke three last time. Better visit a Buick specialist for fault code reading.
