I just learned my neighbor got so unlucky with his 2024 when he used his rear defroster one morning and his windows just shattered to pieces. He was out of town when it happened.. he didn't get to park his car inside a garage and he said the temperature dipped overnight. Talk about bad timing! Poor guy, I think his car will be at the shop for a while, probably weeks given the parts delays, until he gets it back. So yeah, don't use rear defrosters to warm up your cars especially in colder temperatures! Huge hassle, really!