My yaris (2000) has developed a sqeal in the last few months and am not sure where it's coming from. It only ever squeals when it's cold/damp, and doesn't do it so much if I let the car warm up for 10/15 minutes before going anywhere. It also only happens when I'm pulling away or changing from 1st to 2nd gear at low revs, around when I reach the bite point and will last a couple of seconds before stopping. However, if I increase the revs when pulling away, it tends not to squeal. There haven't been any other noises and the car still drives perfectly. Does anyone have any idea what this could be? P. S. I know nothing about cars so please dumb it down for me!