Porsche 911 battery drain issue caused by subwoofer not turning off on Porsche 911

Some Porsche 911 owners report experiencing battery drain issues attributed to a subwoofer that fails to turn off, leading to parasitic battery drain where electrical components continue to draw power even when the ignition is off. These owners have encountered problems related to faulty wiring, malfunctioning sensors, or electrical shorts that can cause significant battery drain even when the vehicle is not in use. Additionally, issues with the car's sleep mode, which is designed to shut off systems to prevent excessive drain, may not function properly, allowing current draw from fuses during this state. Some owners have identified faulty relays, such as those for the windows, that remain active even with the ignition off, contributing to the battery drain. Regular inspection of components like the subwoofer, glove box light, frunk light, and engine bay lights is recommended to identify potential sources of the drain. Furthermore, timely maintenance and repairs of components, such as the lid lock actuator, can help prevent future battery drain issues.