Hyundai Elantra Hybrid 2023 Engine Oil and Engine Coolant/Inverter Coolant User Guide
ENGINE OIL
Checking the Engine Oil Level
Engine oil is used for lubrication and cooling, so it is gradually consumed during driving the vehicle. Regularly check and manage the oil level using the following procedure.
- Follow all of the oil manufacturer’s precautions.
- Be sure the vehicle is on level ground in P (Park) with the parking brake set. If possible, block the wheels.
- Turn the engine on and allow the engine to reach normal operating temperature.
- Turn the engine off and wait about 15 minutes (with oil filler cap and dipstick detached) for the oil to return to the oil pan.
- Pull the dipstick out, wipe it clean, and re-insert it fully.
- Pull the dipstick out again and check the level.
- If the oil level is below L, add enoughoil to bring the level to F.
Use only the specified engine oil. (refer to “Recommended Lubricants and Capacities” in chapter 2).
NOTICE
To prevent damage to your engine:
- Do not spill engine oil when adding or changing engine oil. Wipe off spilled oil immediately.
- The engine oil consumption may increase while you break in a new vehicle and it will be stabilized after driving 6,000 km.
- The engine oil consumption can be affected by driving habits, climate conditions, traffic conditions,
oil quality, etc. Therefore, it is recommended that you inspect the engine oil level regularly and refill it if necessary. - The engine oil change interval is set for the purpose of preventing oil deterioration, and is not related the amount of oil consumption; so, check and refill the amount of the oil regularly.
Checking the Engine Oil and Filter
- Have engine oil and filter changed by an authorized HYUNDAI dealer according to the Maintenance Schedule at the beginning of this chapter.
- If exceeding the maintenance schedule for replacement of engine oil, the engine oil performance
may deteriorate and the engine condition may be affected. Therefore, the replacement cycle should be observed. - If the maintenance schedule to replace engine oil is exceeded,
the engine oil performance may deteriorate, and the engine condition may be affected. Therefore, replace the engine oil according to the maintenance schedule. - To keep the engine in optimal condition, use the recommended engine oil and filter. If the recommended engine oil and filter are not used, replace it according to the maintenance schedule under severe usage conditions.
- The purpose of the maintenance schedule for engine oil replacement is to prevent oil deterioration and it is irrelevant to oil consumption. Check and refill engine oil regularly.
CAUTION
The engine oil is very hot immediately after the vehicle has been driven and can cause burns during replacement. Replace the engine oil after the engine oil has cooled down.
WARNING
CALIFORNIA PROPOSITION 65 WARNING
Engine oil contains chemicals known to the State of California to cause cancer, birth defects and reproductive harm. Used engine oil may cause irritation or cancer of the skin if left in contact with the skin for prolonged periods of time. Always protect your skin by washing your hands thoroughly with soap and warm water as soon as possible after handling used oil.
ENGINE COOLANT/INVERTER COOLANT
The high-pressure cooling system has a reservoir filled with year-round antifreeze coolant. The reservoir is filled at the factory.
Check the antifreeze protection and coolant level at least once a year, at
the beginning of the winter season and before traveling to a colder climate.
NOTICE
- When the engine overheats by low level of the engine coolant, suddenly adding engine coolant may cause cracks in the engine. To prevent damage, add engine coolant slowly in small quantities.
- Do not drive with no engine coolant. It may cause water pump failure and engine seizure, etc.
Checking the Coolant Level
Check the condition and connections of all cooling system hoses and
heater hoses. Replace any swollen or deteriorated hoses.
The coolant level should be filled between the MAX and the MIN marks on the side of the coolant reservoir when the engine is cool.
If the coolant level is low, add the selected anti-freeze according to the proper coolant mix ratio to bring the level to the MAX mark, but do not overfill. If frequent additions are required, see an authorized HYUNDAI dealer for a cooling system inspection.
WARNING
- Check if the radiator cap label is straight In front.
- Make sure that the tiny protrusions inside the radiator cap should be securely interlocked.
WARNING
Never remove the engine coolant cap and/or inverter coolant cap or the drain plug while the engine and radiator are hot. Hot coolant and steam may blow out under pressure, causing serious injury.
Turn the vehicle off and wait until the engine cools down. Use extreme care when removing the engine coolant cap and/or inverter coolant cap. Wrap a thick towel around it, and turn it counterclockwise slowly while the pressure is released from the cooling system. When you are sure all the pressure has been released, using a thick towel, continue turning counterclockwise to remove it.
Information
The engine coolant and/or inverter coolant level is influenced by the hybrid system temperature. Before checking or refilling the engine coolant and/or inverter coolant, turn the hybrid vehicle off.
WARNING
The electric motor for the cooling fan may continue to operate or start up when the engine is not running and can cause serious injury. Keep hands, clothing and tools away from the rotating fan blades of the cooling fan.
Keep hands, clothing and tools away from the rotating fan blades of the cooling fan.
Always turn off the vehicle unless the vehicle has to be inspected with the engine on. Be cautious as the cooling fan may operate until you disconnect the battery connector.
WARNING
Make sure the coolant cap is properly closed after refilling coolant. Otherwise the engine could be overheated while driving.
- Check if the coolant cap label is straight In front.
- Make sure that the tiny protrusions inside the coolant cap are securely interlocked.
Recommended engine coolant
- When adding coolant, use only distilled (deionized) water for your vehicle and never mix hard water in the coolant filled at the factory.
- An improper coolant mixture can result in severe malfunction or engine damage.
- The engine in your vehicle has aluminum engine parts and must be protected by an ethylene-glycol with phosphate based coolant to prevent corrosion and freezing.
- Do not use alcohol or methanol coolant or mix them with the specified coolant.
- Do not use a solution that contains more than 60% antifreeze or less than 35% antifreeze, which would reduce the effectiveness of the solution.
For mixing percentage, refer to the following table:
| Ambient Temperature | Mixture Percentage (volume) | |
| Antifreeze | Water | |
| 5°F (-15°C) | 35 | 65 |
| -13°F (-25°C) | 40 | 60 |
| -31°F (-35°C) | 50 | 50 |
| -49°F (-45°C) | 60 | 40 |
Information
If in doubt about the mix ratio, a 50% water and 50% antifreeze mix is the easiest to mix together as it will be the same quantity of each. It is suitable to use for most temperature ranges of – 31°F and higher.
WARNING
The electric motor for the cooling fan may continue to operate or start up when the engine is not running and can cause serious injury. Keep hands, clothing and tools away from the rotating fan blades of the cooling fan.
The electric motor for the cooling
fan is controlled by engine coolant temperature, refrigerant pressure and vehicle speed. As the engine coolant temperature decreases, the electric motor will automatically shut off. This is a normal condition.
Changing Engine Coolant
Have coolant changed by an authorized HYUNDAI dealer according to the Maintenance Schedule at the beginning of this chapter.
WARNING
Do not use engine coolant or antifreeze in the washer fluid reservoir.
Engine coolant can severely obscure visibility when sprayed on the windshield and may cause loss of vehicle control resulting in an accident.
Engine coolant may also cause damage to paint and body trim.
NOTICE
To prevent damage to engine parts, put a thick towel around the radiator cap before refilling the coolant to prevent the coolant from overflowing into engine parts, such as the alternator.
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Reference Links
View Full User Guide: Hyundai Elantra Hybrid 2023 User Guide
Download Manuals: https://owners.hyundaiusa.com/us/en/resources/manuals-warranties.html
