What is the windshield defrost symbol?

[JudeLee]

The symbol for the car air conditioner's windshield defrost function typically features three upward-curving wavy lines in a fan shape or rectangular shape. Different car models may have variations in this symbol, but most vehicles share a similar button design. How to deal with foggy windshields: 1. Cold air defogging: Locate the front windshield defrost button, set the fan speed to maximum, turn on the A/C switch, and adjust the temperature to the lowest setting. The fog on the glass will disappear shortly. Some vehicle models also feature rear windshield and side mirror heating elements - activating these switches will typically clear fog within about one minute. 2. Warm air defogging: If the car has just been started, wait a few minutes for the engine to warm up and the coolant temperature to rise before activating the heating system. Set the airflow to maximum and engage the front windshield defrost mode. The fog should disappear within minutes. One disadvantage of using warm air defogging in winter is that it initially creates more condensation on the interior glass, requiring some time before becoming effective.