what things set off the coolent buzzer/alarm? and how often is it a false alarm?

 

mine is going off constantly and i found out it was the water level sensor. check the front of the thermostst housing there is a black plug,looks like a bolt head. make sure the wire is connected to it because mine melted off ( black wire ) and made the buzzer go off. just ordere a new one it was around $42 from malloy mazda.
mike

 

Low coolant level. I've never heard of one falsing, but I could be wrong...

 

what about a broken or leaking pipe?

 

thus causing low coolant like kento said

 

heh i figured it could come back to that
thanks guys

 

mine goes on everytime I start the car and then stops when it reaches half way. starting to really **** me off. thats not the only problem I am having with my gauges.

 

2 things will set off the buzzer:

1. the coolant level sensor; and

2. a disconnection b/w a white single wire connector located right behind the PS pump; I think it's a low oil level sensor.

Both must be in working order or the buzzer will not shut off.

 

Your coolant level is too low. Add more to the filler neck when the car is cold. If you shine a flashlight down the filler neck when the car is cold, you'll probably see the level below the sensor. You sensor is working as it should.