Engine overheating is very dangerous, and bad luck may destroy the engine. If the thermometer pointer enters the red zone, stays at a high position, or vibrates repeatedly in the red zone when driving at high speed on the expressway or when the car climbs the slope, then emergency measures must be taken.
If the engine is overheated on an ordinary highway, you should slow down as soon as possible and drive to a cool place or a relatively cool place to stop the car. Open the hood, let the engine run at idle speed and wait for the engine temperature to gradually return to normal. After the engine water temperature returns to normal, turn off the engine. Then wait for a period of time until the water temperature of the engine drops sufficiently, and then check the cooling water quantity of the engine. At this time, the cooling water of the engine is mostly seriously insufficient. Replenish the cooling water according to the specified amount, and then check the cooling system. After confirming that there are no other faults, you can start the engine to continue driving.
If the engine is overheated on the highway, you must turn on all the warm air and open the window at once, and the car will be extremely hot. Because warm air helps cooling water to dissipate heat, it can greatly reduce the temperature of cooling water. So you can keep driving, find the exit of the nearby highway and drive to a safe place to stop. Next, just lower the temperature of the engine according to the above method. Attention, it is best not to park your car on the side of the road, so as not to affect traffic or be hit by a car. You must park your car in a safe place.