How to Check the Vehicle Production Date on the Car Glass?
4 Answers
The production date of the glass can be checked using the following methods: 1. There is a code at the bottom left or right of the car 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. Some new cars may have inconsistent production dates for their glass. For example, the left rear and right rear windshield production months may differ. In reality, it is possible for glass production dates to vary during vehicle assembly. The vehicle assembly plant is just that—an assembly plant. Parts are stocked in advance and cannot always be assembled immediately, making it difficult to synchronize the timing. Additionally, different batches of glass naturally have different production dates. 3. Some glass may also have a few thick black dots following the production year and month. These dots are used to specify the week of the month.
I remember checking the production date on car glass was quite simple. As a car enthusiast, I often help friends inspect used cars. The method is to look for a small label or engraved code in the corner of the windshield or other glass panels, usually a number followed by a few dots. The number represents the last digit of the year, for example, 8 stands for 2018; the dots indicate the month: dots before the number mean the first half of the year (the number of dots equals the month), while dots after the number mean the second half (number of dots plus 6). For instance, if you see the number 9 with a dot on its left, it means January 2019. This trick helps you avoid buying used cars with replaced low-quality glass, especially after an accident, ensuring the original factory condition for safe driving. Remember to use your phone flashlight for a clear view to avoid guessing.
I find it quite convenient that the vehicle production date is marked on the glass code. As a car owner, I always pay attention to details during maintenance. The numbers on the edge of the glass, such as 7 representing 2027, along with the dot positions: dots on the left indicate January to June, while dots on the right indicate July to December. For example, five dots on the right mean the seventh month. It's not just about the date; it can also help determine if the glass is original. If the date is much earlier than the vehicle's VIN code, it might have been replaced. During routine maintenance, I recommend checking all the glass panels without missing any, and cleaning off dust to prevent minor issues from escalating, thereby extending the service life.
I know there's a production date code on the car glass, simple and straightforward. Look for the combination of numbers and small dots in the corner of the glass: the number represents the last digit of the year, and the dot's position distinguishes between the first and second half of the year. A dot on the left means January to June, while a dot on the right means July to December. For example, the number 2 with a dot on the right indicates July 2022. This code is suitable for quick verification—don’t overlook the label on the windshield. If it's blurry, try wiping it clean or using a magnifying glass to ensure accuracy and avoid misjudgment. After vehicle repairs, it’s best to verify the match.
