Turn of your wipers when parked in colder climates.
Some people leave them on. This may not hurt the car or wipers normally, but if the wipers.freeze to the windscreen, the wiper motor will keep trying to put them back in their starting position, even if you turn them off afterwards. This will ruin your wiper motor. It's also smart to put your wipers 'up' when you know it's going to freeze.