How to Troubleshoot Power Mirror and Electrical Issues on a 2004 Lexus GX 470?

To address the issue with your 2004 Lexus GX 470's sideview power mirrors not responding, I recommend starting by disconnecting the negative battery terminal. Let it sit for about five minutes before reconnecting it. This can help reset the system and may resolve the problem. If that doesn’t work, it’s a good idea to take your vehicle to an auto shop for a diagnostic scan. This scan can identify any faulty parts or sensors that might need replacing. If everything checks out and no parts need replacement, the scanner can also reset the ECU, which might clear any lingering issues. Given the symptoms you mentioned—like the clock resetting to 1:00 each time you start the car, the VSC lights being illuminated, and the driver side power window not functioning—there could be a deeper electrical issue at play. It's possible that the Body Control Module (BCM) is malfunctioning, as it manages many electrical systems in the vehicle. Before considering the purchase of a new BCM, I suggest getting a second opinion from another repair shop. They might uncover something that was missed during the initial diagnostics. This way, you can avoid unnecessary expenses and ensure that you’re addressing the correct issue.