What is the reason for the one-touch window lift malfunction after replacing the battery?
2 Answers
The reason for the one-touch window lift malfunction after replacing the battery may be due to the driver-side window control lock being engaged or wiring issues. Solutions for the one-touch window lift malfunction: If the driver-side window control lock is engaged, press and hold the button to lower the window completely, hold for a few seconds, then raise the window to the top and hold for a few seconds. If it's a wiring issue, it's necessary to visit a 4S shop or a professional electrical repair shop for maintenance. After repeatedly raising and lowering the window several times, to prevent overheating and damage to the window lift motor, the window lift function may temporarily shut down for a few seconds. Other possible causes include an abnormal door control module, malfunctioning window lift control buttons, insufficient battery power, etc. After disconnecting and reconnecting the car battery, the automatic lift function of the power window may temporarily fail. How the window works: The working principle of the power window is shown in Figure 4. The front doors have a one-touch lift with anti-pinch function, so the BCM directly controls the front door switches and front door motors to achieve one-touch lift and anti-pinch control. The rear door motors do not have the one-touch lift with anti-pinch function, so they are not connected to the BCM. The driver-side switch on the left can not only control its own window lift but also the other three windows, and can lock the power window lifts, which is designed to facilitate the driver's overall control of the vehicle. The switches on the other three doors only have the function of controlling the window lift.
Last week, right after I replaced my car battery, I noticed the one-touch up/down function for the driver's window stopped working. It took me a while to realize the issue was caused by power reset. Many modern cars have anti-pinch memory functions that clear all previously set window parameters when power is cut. The solution is actually quite simple—you need to perform an initialization: hold the window-up button until fully closed and keep it pressed for 5-6 seconds, then hold the window-down button until fully open and maintain for a few seconds to reset. If the entire window becomes unresponsive, check whether the corresponding 10-amp fuse in the fuse box has blown. As a side note, improper battery replacement procedures with loose wiring connections can also affect power supply to the window controller.
