Toyota Sequoia Lights Brake, VSC Track and BSC OFF

I need urgent help; this is driving me crazy. These Sequoia wagons are really troublesome with their electronic systems. Why do the parking brake light, VSV TRACK, and VSC OFF lights come on?
What could be the possible causes? I had it scanned, but nothing came up on the scanner, like there's nothing wrong. But I think it's because it's a scanner for Japanese vehicles, not American ones, and the friend put it on a Land Cruiser while it was stationary and 4700cc, since there's no Toyota Sequoia on his scanner. What could these warning lights mean? Are they dangerous? How can I fix these problems? What should I have done to fix them, and what should I keep in mind?
Someone told me it was the stability control system, and I asked, "So what?" What does that mean? Any help would be greatly appreciated.
Thank you. My station wagon is a 2002 model. :(

Check the vehicle's fluid levels, the brake lights, just like in Peugeot, they come on when the fluid is low, check all levels and bring them to their mark, then we'll see if it improved.

Thank you very much for the advice, but I'll tell you that I didn't put in the level indicated and the light is still on; it's something else that goes along with the VSC Track and VSC Off lights.

And did Bracke's turn off?

I wanted to let you know that the brake light is still on, and another thing is that the brake pedal has gotten a little stiff; it works, but the pedal is hard. I suspect it's the brake sensor related to the ABS. I wish I had the repair manual for that station wagon; it would make it easier to find the problem. Thanks for your concern.