Hyundai Check Engine Coolant Level
Is your Hyundai temperature gauge getting high? Learn how to fix the problem by checking/adding coolant to your Hyundai. This guide will teach you how to check engine coolant levels on a Hyundai.
You will also learn to add coolant if the level is low. When the temperature gauge reports a slightly higher than normal, your radiator may be low on coolant.
Symptoms
- Check the coolant level warning message.
- Hyundai engine overheats.
- The temperature gauge moves to “high.”
- A red temperature light comes on.
- Steam from the engine.
- Coolant reaches the minimum level.
What you will need
- Hyundai Coolant
- Mixed 50% Antifreeze / 50% Distilled Water
Procedure
This procedure applies to most Hyundai vehicles with non-pressurized coolant reservoirs.
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- Turn off the engine and allow it to cool down.
- Pop the hood open by pulling the hood release under the hood.
- Find your coolant reservoir on the engine’s side and check the level by looking at the side of the container.
You should see a MIN and MAX line. - If the level is below the minimum, open the filler cap and add coolant to bring it to just below the maximum.
- Close the filler cap.
You should see a MIN and MAX line. 
Hyundais with pressurized reservoirs:
- Let the engine cool down.
- Pop the hood open.
- Find your coolant reservoir, and check the level.
- If the level is below the minimum, open the filler cap and add coolant to bring it to just below the maximum.
- Close the filler cap.
Follow these steps if the radiator is empty due to overheating, broken hose, or cooling system maintenance.
- Let the engine cool down. Never remove the radiator cap when the engine or coolant is still hot, or you risk getting burned.
- Pop the hood open.
- Locate and open the radiator cap by pushing it down and turning it counterclockwise.
- Fill the radiator with coolant until it gets to the overflow pipe.
- Close the cap and add coolant to the overflow reservoir as well.
What color is Hyundai Coolant?
Typically GREEN. What is more important is to use the color coolant type. Hyundai vehicles require Organic Acid Technology (OAT) coolants that may be orange, yellow, or green.
How often shall I need to replace the coolant on a Hyundai?
It is recommended that the coolant be changed every 30,000 miles. In some cases, owners have not changed the coolant/antifreeze up to 100,000 miles. At a minimum, you should change it every 60,000 miles.
Can you put water instead of coolant on a Hyundai?
Using water in the cooling system is common in emergencies but not recommended otherwise. Your car’s cooling system needs coolant to keep it from overheating.
Although water can be added to the radiator in emergencies, manufacturers recommend adding a mixture of coolant and water because plain water can boil before the proper coolant boils, causing your engine to overheat. Water can also freeze and crack the engine block or burst cooling hoses.
Can you drive a car without coolant?
No. Your engine will overheat and can seize. You won’t be able to drive for very long before the engine sizes. Once the engine seizes, it won’t restart, and the engine will need to be replaced.
We hope you find the Hyundai Check Engine Coolant Level guide helpful. Check these troubleshooting and repair guides for more help on your Hyundai.
