I checked the carpet....it's dry , checked the radiator cap and the monitored the fluid lever from the reservior, it seemed to be in a constant level.
Funny thing is sometimes there is no bubbling noise. but most of the times it makes the noise! and everytime i take it to the dealer it does not make the bubbling sound and the service manager thinks i amd dicking around with them.
Besides the bubbling sound does anyone have a noisy dash and door pannel? mine makes a sound whenever the roads are slightly uneven. And my streak of bad luck continued with this car ....today i noticed a squeaking noise from the rear . So when i inspected it furthermore, i tried pressing at the bumper and it makes a squeaking noise like an old bed. I think it could be the shocks or springs? My Sorento is not even 5 months old and i already have all these issues!!