Coolant alert

[VADER332]

In M mode everything sport plus, I accelerated hard from red lights twice in the span of about 4 minutes. I got the top off coolant alert after the second time. I stopped the car, and didn't see any leaks. I started the car back up and the alarm did not come back on. I drove 5 minutes to get home and the light never came back on again. I checked the coolant levels. The small reservoir on the passenger side was close to the minimum mark. I added some coolant. I could not see any coolant in the large reservoir on the driver’s side. I am puzzled. Has this happened to anyone else? Do I add anymore coolant to the large reservoir on the driver’s side of the engine? Thanks.

[AWF10M5]

Same thing happened to me in this now hot weather I got a low coolant alert while in stop and go traffic. It went away after restarting the car.

but I was getting a oil change done the same day so when we check the small tank was bone dry so I added to the max mark and added a good amount on the other side too.

[VADER332]

Originally Posted by AWF10M5

Same thing happened to me in this now hot weather I got a low coolant alert while in stop and go traffic. It went away after restarting the car.

but I was getting a oil change done the same day so when we check the small tank was bone dry so I added to the max mark and added a good amount on the other side too.

Thanks for the info. The small tank was close to full so I topped that one off. I did add about a pint to the larger tank. The light did go away. The large tank was like a bottomless pit. LOL. I wish BMW would have put some type of level gauge on the larger tank.