What does the rear button in a car mean?

[VanGriffin]

The rear button in a car refers to the function of defogging the rear windshield. Pressing the rear button can remove the fog on the rear windshield, which mainly relies on the principle of heating resistance wires for defogging. Usually, the rear windshield defogger will automatically turn off after about ten minutes. Here are some related details: 1. Defogging through heating wires: Generally, there are heating wires on the rear windshield of a car, which can be seen as copper wires. These heating wires are activated by pressing the rear button to heat and defog the rear windshield. Typically, the rear windshield defogger will automatically turn off after about ten minutes to protect these heating resistance wires. If the defogging effect is not ideal after turning on the rear defogger, it may be due to aging from long-term use. 2. Functions of other buttons: In addition to this button, there is also a FRONT button, which is for defrosting the front windshield. Functions like "rear" are generally not found in most cars; only the front windshield defogger button is available. This feature is usually only seen in some high-end cars.