1. At the first safe opportunity, pull over to the side of the road and stop.
2. Set the gearshift lever to position P (for automatic transmission) or neutral (for manual transmission) and apply the parking brake. Turn off the air conditioner, if it is running.
3. Stop the engine if coolant is leaking underneath the vehicle or steam is coming out from under the hood. Do not open the hood until the coolant has stopped leaking and steam has stopped coming out. If there are no signs of coolant or steam leaking, leave the engine running and check the operation of the engine cooling fan. Turn off the engine if the fan is not working.
4. Check for the presence of the water pump drive belt. If it is in place, check its tension. If the drive belt is in good condition, check the radiator, hoses and underbody of the car for coolant leaks. When you turn off the air conditioner, cold water will flow from it. This is normal.
Caution: To avoid injury while the engine is running, keep hair, hands and clothing away from moving parts such as the fan and drive belts.
5. If the water pump drive belt breaks or coolant leaks, stop the engine immediately and contact your nearest authorized Hyundai dealer for assistance.
Caution: Do not remove the radiator cap when the engine is hot. Coolant may be ejected from the opening, causing severe burns.
6. If the cause of overheating cannot be determined, wait until the engine temperature returns to normal. Then, if there is a coolant leak, carefully add coolant to the reservoir to bring the fluid level to the half mark.
7. Continue driving carefully, watching for signs of overheating. If overheating occurs again, contact an authorized Hyundai dealer for assistance.
[The original text is available on the website: HyundaiBook]
Caution: If there is significant loss of coolant, indicating a leak in the cooling system, have it checked by an authorized Hyundai dealer as soon as possible.