Engine Coolant Level Inspection

Inspect the condition and connections of all cooling system hoses and heater hoses. Replace any swollen or worn hoses.

The coolant level should be between the MAX and MIN (or F (Full) and L (Low)) marks on the coolant reservoir when the engine is cold.

If the coolant level is low, add sufficient distilled (deionized) water. Fill to the MAX (or F (Full)) level, but do not overfill.

If frequent addition is required, we recommend having the system inspected at an authorized HYUNDAI dealer.

WARNING

Never remove the coolant reservoir cap/radiator cap or drain plug when the engine and radiator are hot. Hot coolant and steam may be expelled under pressure, causing serious injury.

Turn off the engine and wait until the engine has cooled. Be extremely careful when removing the coolant reservoir cap/radiator cap. Wrap it with a thick towel and slowly turn counterclockwise to the first stop. Step back while the pressure is released from the cooling system. When you are sure all pressure has been released, press down on the cap using a thick towel and continue turning counterclockwise to remove it.

WARNING

The cooling fan motor may continue to run or start when the engine is off, and may cause serious injury.

Keep hands, clothing and tools away from the rotating blades of the cooling fan.

The cooling fan motor is controlled by engine coolant temperature, refrigerant pressure, and vehicle speed. As the engine coolant temperature decreases, the fan motor will automatically turn off. This is a normal condition. If your vehicle is equipped with T-GDI, the cooling fan motor may start operating at any time and continue to run until you disconnect the negative battery cable.

Recommended Engine Coolant

• When adding coolant, use only distilled (deionized) water for your vehicle, and never mix hard water with the factory-filled coolant. An incorrect coolant mixture may cause serious malfunction or engine damage.
• Your engine contains aluminum components and must be protected with ethylene glycol phosphate-based coolant to prevent corrosion and freezing.
• DO NOT USE alcohol- or methanol-based coolant, and do not mix them with the specified coolant.
• Do not use a solution containing more than 60% antifreeze or less than 35% antifreeze, as this will reduce the effectiveness of the solution.

Refer to the following table for the mixture percentage.

Information

If you are unsure of the mixture ratio, a 50% water and 50% antifreeze mixture is optimal. It is the easiest to mix, since it uses equal amounts of each. It is suitable for use in most temperature ranges down to -35°C (-31°F) and above.