If a red dashboard warning light illuminates while driving (such as oil pressure or brake system failure), what must the driver do?

1. Accelerate to highway speed to blow out debris from the engine sensors
2. Indicate, pull over safely to the extreme right at the earliest opportunity, stop, and switch off the engine
3. Ignore the warning light until reaching the destination at the end of the day
4. Switch on hazard lights and continue driving normally for another 50 km