What does rear mean inside the car?

[LaFinley]

Rear inside the car refers to the defogging button, which represents the function of rear windshield defogging. Some vehicle models have removed the English word and use an icon to indicate rear windshield defogging, making it more intuitive. The button is typically rectangular in shape with three curved arrows inside. The rear windshield defogging device works by incorporating copper wires into the rear windshield. When there is fog on the rear windshield, pressing this button uses electric current to heat part of the copper wires, thereby heating the rear windshield and clearing the fog. It is important to note that this defogging function has a time limit and will automatically turn off after about 10 minutes of use, primarily to protect the electric heating wires.