Engine Coolant Level Inspection

WARNING

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

Turn off the engine and wait until it cools down. Be extremely careful when removing the radiator cap. Wrap it with a thick towel and turn counterclockwise slowly to the first stop. Step back while 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 cooling fan blades.

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

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 F and L marks on the side of the coolant reservoir when the engine is cold.

If the coolant level is low, add enough distilled (deionized) water to reach the F mark, but do not overfill. If frequent addition is required, we recommend having the cooling system checked by an authorized HYUNDAI dealer.

Recommended Engine Coolant

• When adding coolant, use only deionized water, distilled water, or soft water suitable 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.

For the mixing ratio, refer to the following table:

Information

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