What are the reasons for the simultaneous failure of three window buttons?
2 Answers
Window three buttons at the same time failure of the reasons are as follows: The voltage is too low: The reason why the window will rise and fall is driven by the window regulator, if the car battery voltage is too low, it may lead to the window rise and fall failure, that is, the car has not been driven for a long time, the car will appear discharge situation, so if the car is not driven for a long time, the battery should be charged to maintain sufficient voltage, so that the problem will not occur. The circuit has a problem: It should be known that there are many parts inside the door. If the door is closed with great force, some parts inside will become loose, which will lead to poor contact of the switch. It happens that the window lifting is controlled by electricity, which is the reason for the lifting failure.
I've noticed this issue mostly occurs in older vehicle models. There's a problem with the shared circuit section of the window system, most likely the main control fuse has blown - it's located in the fuse box under the steering wheel. I encountered this in my own car, and upon inspection found a 10A fuse with a broken filament. If replacing the fuse doesn't solve it, the master control switch on the driver's door panel might be faulty. This switch handles signal transmission for all windows, and if its internal contacts wear out, everything fails. Wiring shorts can also cause this, especially if the wiring harness under the driver's seat gets damaged by long-term friction from floor mats. I'd advise against DIY door panel removal - the wiring connectors are delicate and you might cause more problems. The easiest solution is to take it to a repair shop and have them test the current with a multimeter.
