How to Check the Production Date of Car Window Glass?
2 Answers
Methods to check the production date of car window glass: 1. There is a code in the lower left or lower right corner of the window glass. The last or second-to-last row contains a number and several small black dots, which indicate the production date of the glass; 2. The number represents the production year of the glass, showing the last digit of the year, while the small black dots are used to determine the production month. The markings on the front and rear windshields differ because they are different types of glass, and the manufacturer's part numbers also vary. Typically, the glass code consists of a combination of symbols, numbers, and English letters printed in the lower left corner of the glass, including information such as the car brand, glass brand, certification marks, glass type, and production date.
As a car enthusiast, I know that the production date of car window glass is crucial. Usually, in a corner or edge of the glass, there is a small string of characters called the DOT code. The numerical part represents the year, for example, '23' means 2023; dots or small symbols represent the month, such as two dots indicating February. By carefully cleaning the glass, you can find it, most commonly on the driver's side windshield. Deciphering it can help determine if the glass is original. For instance, when buying a used car, a date significantly earlier than the car's age might indicate replacement after an accident. I often check this myself, as it relates to safety—glass older than ten years tends to age and become brittle, increasing risks during rain or snow driving. Although modern car glass is of good quality, timely replacement is important for both saving money and peace of mind. Remember these small markings to help you avoid big troubles.
