What is the problem with frost inside the front windshield?

[GideonFitz]

Frost inside the front windshield of a car is caused by a significant temperature difference between the inside and outside of the vehicle. Here are some solutions for defrosting the car: 1. Warm up the car properly: If there is frost on the front windshield, do not use the wipers to scrape it off. Instead, allow the engine to warm up properly while idling, and wait for the engine coolant temperature to rise. Avoid turning on the heater during this period. 2. Turn on the heater: After the vehicle has warmed up and the engine coolant temperature has risen, you can turn on the air conditioning heater, select the windshield defrost mode, and set the heater to the highest setting. Wait patiently for 5~10 minutes. 3. Clean promptly with a cloth: Once the warm air has melted the frost, use a cleaning cloth to gently wipe it away. This can speed up the melting process, but make sure the frost has fully melted before wiping. 4. Use tools if necessary: If the frost persists or there is frost elsewhere on the car body, you can use tools like a snow scraper for more effective removal. However, ensure the scraper blade is made of soft rubber to avoid scratching the glass.