Mechanic Q: Car has over 120K on it. Just started overheating, filled?

Car has over 120K on it. Just started overheating, filled the radiator reservoir, it goes alittle while and starts overheating. now I have a symbol kind of like a mercedes symbol. Plan to take it to garage this morning, what do you think is wrong

Q: overheating?

suzuki forenza 06, just started overheating while driving on highway, now a mercedes-like symbol?