How to Check the Production Date on Car Glass?
2 Answers
Methods to check the production date on car glass: 1. Numbers plus dots: The dots can be in front of or behind the numbers. If the dots are in front, it indicates the first half of the year, and you can subtract the number of dots from 7. If the dots are behind, it indicates the second half of the year, and you can subtract the number of dots from 13. 2. Numbers plus small dots and large dots: The numbers represent the year, the small dots represent the quarter (usually 4 small dots), and the large dots represent the corresponding month within the quarter (usually 3 large dots). 3. First line with numbers and small dots, second line with large dots and small dots: The numbers represent the production year of the glass, the small dots on the first line represent the month of that year (ranging from 1 to 12 dots), and the second line represents the corresponding days of the month, where large dots represent 10 days and small dots represent 1 day.
I only noticed the numbers and small dots at the corners of my car windows during a recent wash. After asking an experienced driver friend, I learned how to interpret them. The numbers represent the year, for example, '20' stands for 2020. The position of the dots determines the month: dots on the left side of the number indicate the first half of the year, with one dot corresponding to January, two dots to February, and so on up to six dots for June. Dots on the right side represent the second half of the year, with one dot for July, two for August, up to five dots for December. My old car's windshield has '18..', with two dots after the number, indicating it was manufactured in August 2018. Understanding this helps assess the age of the glass and prevents being misled when replacing it. Over time, car glass can become a safety hazard, so timely checks can prevent cracks during high-speed driving. I recommend occasionally checking this coding at the corners of your car windows, as these details relate to driving safety.
