The coolant level in the tank will vary with engine temperature. But if the level is below the line "LOW", add coolant. Level up to the line "FULL".
If the coolant level drops shortly after topping up, there may be a leak in the system. Visually check the radiator, hoses, engine coolant filler cap, radiator cap and drain plug, water pump.
If no leak is found, have the cap pressure checked by the dealer to see if there is a leak in the cooling system.
Attention! To avoid burns, do not remove the radiator cap when the engine is hot.