What does 'rear' mean in a sedan?

[DelAxel]

The REAR button in a car is the rear windshield defogger button. Here are the specific details about the REAR button in cars: 1. Button function: The REAR button appears in the car's air conditioning system. The car's air conditioning system has buttons like FRONT and REAR. The FRONT button is for the front windshield defroster, while the REAR button is for the rear windshield defroster. The front windshield defroster blows air onto the windshield, while the rear windshield defroster uses heating wires to defrost. 2. Automatic shutdown: On the car's rear windshield, there are copper wires that serve as heating elements. Pressing the REAR button activates these heating wires to defog the rear windshield. The rear windshield defogger automatically turns off after about ten minutes to protect the heating wires.