1. At the first safe opportunity, pull over and stop.
2. Set the gear lever to position P (for automatic transmission) or to neutral (for manual transmission) and apply the parking brake. Turn off the air conditioner if it is running.
3. Stop the engine if coolant leaks under the bottom or steam comes out from under the hood. Do not open the hood until the coolant stops flowing and steam escapes. If there is no evidence of coolant or vapor leakage, leave the engine running and check the operation of the engine cooling fan. Turn off the engine if the fan is not running.
4. Check the presence of the water pump drive belt. If it is in place, check its tension. If the drive belt is OK, check the radiator, hoses and underside of the vehicle for coolant leaks. When the air conditioner is turned off, cold water will flow from it. This is fine.
Attention. 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 is broken or coolant leaks, stop the engine immediately and contact your nearest authorized Hyundai dealer for assistance.
Attention. Do not remove the radiator cap when the engine is hot. Coolant may be ejected from the hole, resulting in severe burns.
6. If the cause of overheating cannot be determined, wait until the engine temperature returns to normal. Then, in the event of a coolant leak, carefully add coolant to the reservoir to bring the coolant level to half the mark.
7. Continue driving carefully, watching for signs of overheating. If overheating persists, contact an authorized Hyundai dealer for assistance.
Attention. If there is a significant loss of coolant, indicating a leak in the cooling system, have it checked by an authorized Hyundai dealer as soon as possible.