Hi, I'm new to this site. I have recently purchased a 2017 B-max....on a number of occasions now I've noticed the fan running constantly whilst driving. This is happening in cold temperatures and its very annoying. When stood it sounds like a jet engine 😭. It there an easy fix for this, is it normal or do I need to go back to garage...only had it 4 week and its only done 13k on clock. Thanks in advance.