When you drive your car out of water, the first step is to check the overflow tank. This plastic jug is usually located inside the engine bay. Make sure to fill it with enough fluid to prevent your engine from overheating. If you have no overflow tank, you can pour water into the radiator. To start your car, remove the cap from the radiator and the overflow tank, and replace it with the new cap. You can also check the coolant levels.
If you notice that your engine has overheated, you should contact a professional mechanic immediately. A car can suffer serious damage within 30 to 60 seconds if its engine fails to cool down. The problem may be something as simple as a damaged radiator or hose, or as complicated as a malfunctioning cooling system. In the worst case scenario, it can even cause the car to overheat while driving on a hot day.
When you see the temperature gauge near red, you should immediately turn off your engine. If you continue driving, your car may overheat. If you see the needle close to red, it means the engine has overheated. You should never drive an overheating car. You should only continue driving once the temperature gauge has cooled down. It can even be dangerous. In either case, you should remove the engine caps slowly and wear protective clothing and gloves.