Hello guys! I have a serious problem with my coolant. My car is starting to smoke from under the hood and also randomly I would smell a lot of antifreeze through the vents. I change my hoses but I don’t think that’s the problem. It’s not leaking on the floor. But when I inspect under the hood I did see traces of antifreeze but can’t pin point the problem. I have a 2012 650i convertible with xdrive. Does anybody know what’s the culprit and how to fix.