Water is used to cool things down.
You need to but a new one soon or your car will overheat from lack of pressure to keep the water cooled. Compared to most car parts they are inexpensive.
The low water level sensor is in your radiator overflow resivoir. The reservoir is supposed to have a certain amount of coolant in it but if it's low, the light comes on. This has nothing to do with the radiator being empty. True, if the reservoir is left unchecked the radiator may eventually become low and then you will overheat but until then, it's just telling you the reservoir is low.
yes it can.
if you run your engine without antifreeze your car will overheat and ruin the engine.
Your car will not overheat because you still got water in it. You might want to check your oil. The light indicate that the car is either low or out of lubricating oil, please do not run your car yet, check and add oil first.
The engine will overheat.
Theres to much water in your reservoir bottle, theres a mark were it should be filled up to, any more and it will flow over.
The car may overheat!
you have a head gasket out.
Circulating water will not be sufficient and the car will overheat.
no but if you try to run the car with the water pump out you could overheat your engine
The water in the reservoir might boil out in your car if your thermostat is not working correctly. You might also be having an issue with your cooling fan.