Radiator Warning Light Popping-up

[ashabmy]

Hi Bimmerians,Lately my 328 radiator light, amber color always pop-up. I checked the water tank lvl OK & temp also OK. The light stay for few minutes & alrdy pop-up few times.What problem could it b? Water lvl sensor?

 

[Petrus]

Maybe u need to bleed the system bro..

 

[kaiserrand]

Talk about coincidence - last week same thing happened to me. Same symptoms for an entire day last Monday. When I got home I decided to top up with water anyway even water level was okay. Then today, came back on.

Some say sensor, some say expansion tank.
Will be checking it out tomorrow to be sure.