Here's what you should do:
1. Pull over to a safe location. Turn off the engine and let it cool down for a few minutes.
2. Check the coolant level. Open the coolant reservoir and see if it's full. If it's low, add coolant until it reaches the "full" mark.
3. Check for leaks. Inspect the hoses, pipes, and radiator for any signs of leaks. If you find a leak, have it repaired as soon as possible.
4. Start the engine and let it run for a few minutes. Keep an eye on the temperature gauge. It should stay within the normal range.
5. If the warning light comes on again, drive to a qualified mechanic as soon as possible.
Ignoring an overheating engine can cause serious damage, including engine seizure. Therefore, it's essential to take immediate action when you see this warning light.
