Brake fade occurs when the braking system overheats, causing a temporary reduction in stopping power. This often happens when driving in hot conditions or descending steep hills, as the brakes are working harder to slow the car down. To prevent brake fade, regularly check your brake fluid, and ensure your brake pads are in good condition. Avoid riding the brakes for extended periods, and opt for downshifting when driving downhill to take some pressure off the brake system.