Why can't the driver control all four windows in the Lavida?
2 Answers
The inability of the Lavida's driver to control all four windows may be due to a damaged window regulator or wiring issues. It's advisable to first check the plugs and fuses. The front electric windows feature one-touch up/down with anti-pinch functionality, so the BCM directly controls the front window switches and motors to achieve one-touch operation and anti-pinch protection. The rear window motors, however, lack one-touch up/down with anti-pinch functionality and are therefore not connected to the BCM. Window control instructions: The last one-touch function restricts rear passengers from controlling the rear window operation, but doesn't affect the driver. Even when this button is pressed, the driver can still operate the rear windows. The driver's window features one-touch up/down operation, while the other three windows only have one-touch down functionality. The driver's window has two-stage operation: lightly pressing or lifting moves the window to the desired position, while pressing or lifting fully triggers automatic operation until the window is completely opened or closed. The other three windows also have two-stage operation. There's a central control button (not the master control button) on the driver's door panel. When pressed, only the driver's window can be opened, while the other three windows remain locked.
The issue of the Lavida's main driver not being able to control all windows is something I've encountered quite often. Usually, it's due to a malfunctioning master control switch—the button unit may have poor contact or be completely broken, preventing signals from reaching the individual window motors. Sometimes, a blown fuse can also cause this. The Lavida's fuse box is located under the steering wheel, and checking whether a fuse is blown is quite simple—just use a multimeter or try replacing it with a new one. Loose wiring connections are another common cause, such as worn or broken wiring harnesses near the door hinges. Last time I helped a friend fix their car, we found loose wires only after removing the door panel. Another factor is the window motor itself failing—though it's rare for all four to fail at once, issues with the master control unit can easily lead to a complete loss of control. Safety-wise, this problem is quite dangerous, especially during rainy weather or high-speed driving when windows get stuck and won't open. As an emergency measure, try controlling the windows from other door buttons. If that doesn't work, seek professional help—never attempt to dismantle it yourself to avoid electric shock. Regular maintenance, like cleaning the switches to prevent dust buildup, can help prevent this issue.
