My coolant light/ warning buzzer comes on and off and I check my coolant and it's fine. ANy idea why it might not be working correctly

 

ON and OFF while you driving or while you at idle?? more detail

 

check the sensor in the middle of the radiator on the top. the little black one with a wire sorta glued to it. wiggle it around and see what that does.

 

open your radiator cap put some water ,open the cap of the outlet that is next to the alternator pour water there too, till it pours out then start the car pour more if needed and then close both caps .you may have some air in your Radiator my .02

 

i would say u have some air pockets in the system....i had the same problem ...the engine cooled fine and the coolant was there....and still the buzzer went off...so annoying....if removing the air outta the system doesnt work....all u have to do is ground the black wire thats connected to the sensor on the radiator...that should get rid of the add coolant light and buzzer...but i warn that this be the last thing u do...

 

if the car dosnt loose water or overheat you might have a bad sensor.... could be that simple, ive seen those fail before!