Contents: Examination ⇓ Topping up ⇓
Examination
Although there is a temperature and coolant level warning light, you should not rely entirely on it and should check the coolant level in the expansion tank in the engine compartment from time to time.
A proper check of the coolant level can only be performed with the engine not running. The fluid level is visible through the transparent tank even when the lid is closed. When the engine has cooled down, it should be slightly above the "LOW" mark on the expansion tank. When the engine is warm, the level should be even higher, but should not cross the "FULL" limit.
Topping up
A noticeable loss of coolant indicates a defect or damage. The coolant is not consumed or evaporated from the closed cooling system. Only when the engine overheats can a small amount of coolant escape through the radiator cap.
When opening the radiator cap (1) on a warm engine, there is a risk of being burned by hot steam, so you must proceed with caution.
Turn the cap through a rag or glove first one turn and release excess pressure in the cooling system. Only then completely unscrew the cap
If you drink up the water, the coolant will gradually become diluted, so you need to top up the coolant.
Do not add fluid above the mark, as the fluid expands when heated and the excess flows out of the system.
[The text is provided by the web resource HyundaiBook]
Small amounts of liquid can be added to the tank both when the engine is warm and when it is cold.
If there is a significant loss of fluid and the engine is warm, do not add cold fluid to the expansion tank, as this may cause the cylinder head to warp or the cylinder block to crack.