If you won't check the coolant, take the car to the shop and have it checked. It is too new to be having cooling system problems, but still there is a possibility of low coolant, bad temperature sensor, bad thermostat or faulty malfunction light. It might be as simple as a loose wire. It might be as complex as a blown head gasket. When the warning light comes on, it isn't for decoration or entertainment. You need to prevent damage that will be very expensive.