Check the coolant level and make sure that its full, and is not leaking down over time. If the system is full then the low coolant sensor is probably bad.
There is a sensor either in the coolant recovery jug or the radiator side tank that is defective.
If coolant level is correct - could be a defective sensor
if coolant is ok!! then check coolant sensor.
I will assume that the radiator is full. there is a sensor that tells you when it's low. It should be close to the top of the radiator or coolant tank. if it isn't unplugged or the wires broke, then it's bad. They are easy to replace. just unscrew it and screw in another.
The coolant level sensor in the reservoir is probably at fault.
Add coolant to the reservoir. If the low coolant light still stays on, replace the low coolant sensor.
I've heard that it blinks when coolant is low and stays on when coolant is too hot.
why does the coolent light stay on in my 2000 mustang gt 4.8
no it doesnt
Yes it does.
Defective or misadjusted, brake light switch.
have you filled up your coolant if so its the computer chip unplung your battey cable for fifteen minutes