For most drivers, the rear defroster button is an afterthought. You jab it on cold mornings, watch the frost melt into streaky rivulets, and then forget about it until the next weather event.

Q: I just noticed my rear window defroster has a big gap in the middle that doesn’t defrost. It’s about 2 inches high. I was told the window needs to be replaced to fix this, and it’s really expensive ...

Most drivers get into their car and, upon noticing a foggy rear window, hit the defroster button, waiting for the horizontal lines in the glass to work their magic. It seems very low-tech, yet the ...

Up until the 1970s, some cars still didn't have rear window defrosters. To compensate, many drivers used this interesting gadget. Here's how it works.