If a driver notices a critical mechanical malfunction warning light (such as the braking system red warning light or steering failure light) illuminated while carrying passengers, what must they do?

1. Ignore the warning light and accelerate to finish the trip as fast as possible
2. Safely pull over to the road shoulder/safe area immediately, turn on hazard lights, explain the situation to passengers, end the trip on the app without charging uncompleted distance, and assist passengers in rebooking
3. Ask the passenger to crawl under the moving car to inspect the brake lines
4. Turn off the dashboard light bulbs to pretend the fault disappeared