I had problems with the coolant buzzer earlier this year. I solved it by replacing the thermostat. The car was fine for more than a monthe, but the problem came back.

Whenever I take a right turn at high speed (100 km/h), the coolant buzzer goes off. Yesterday it started yelling at me, a lot; almost all the time. But the temperature was really still (1/3 of the gauge, and the oil temperature was fine too).

So I bleeded* the coolant yesterday and the car was fine this morning... but the buzzer went off again this evening on a high speed right turn (it was the only time it went off).

I'm clueless here...

Any idea of what could be the problem?


*To bleed the system I simply removed the coolant cap, put the heater at the warmer temperature and let the car warm up.

 

Low oil level can also cause the buzzer to go off.

But you say coolant, so coolant it is.

A series four, at least mine, came with a bleed screw on the right side of the radiator. Remove the fill cap on the thermostat housing........fill it up to the top with fluid..........undo the bleed screw til water flows out the bleed screw hole......continue filling the filler neck til it tops off again.....and at the same time reinstall the bleed screw. Result is the water is now at the top of the filler neck and the air bubble in the top of the radiator is not there anymore. Works for me. Warm to hot engine doing that.

I use a old fashion tea pot with spout to fill the system. Dual purpose tea pot.........if I ever start drinking tea.

 

Check your oil level....quickly.

 

^^^^+1

I smelt nasty smell when you described the above, turned out my oil didn't even show on the stick much at all :O

 

Yeah its your oil. I am too lazy to check my oil so I just drive like a mad man on every turn I come too, every couple of weeks the buzzer beeps at me; means I gotta add a quart or more.

Probably has something to do with the oil swishing around during hard cornering and setting off the low oil buzzer.

 

Nah... it has nothing to do with the oil level: I check it quite often and every thing is fine with the oil. And when I bleed the coolant (therefore adding some coolant), the buzzer goes off less often.

I spoke with my father and he gave me an advice: I noticed that the coolant tank gets way to full (pression builds in it). So maybe the coolant cap is too old; it moves up at low pressure, the coolant goes in the tank and less coolant flows passed the thermostat...

But there's a lacune in that idea: once the tank is full, the coolant should flow properly through the thermostat...

Anyway, I'll try the coolant cap.

 

That or the hose that runs b/t the filler and the tank is not tight at each end. If one end or the other is open to atmosphere, the water in the tank won't return back into the engine when the engine cools off.