NCMountie

I have a 2021 GLS 450. I had to have my windshield replaced today, due to a crack from a rock. They ordered the new windshield through my local MB Dealership and it is an OEM windshield. After the Auto Glass shop replaced the windshield, I took it to the MB Dealership to have the cameras recalibrated. The original windshield was infrared-reflecting.

Here is my issue. I can't see the marks that identify the areas permeable to radio waves. How do I ensure that the replacement windshield is IR-reflecting? On the original windshield, when you shined a flashlight on the area, you could clearly see the red marks that identified the areas permeable to radio waves. I can't see those marks on the replacement windshield. Is there another way to identify this?

neetorama

I'm sure your dealer would be happy to confirm that the installed windshield is OEM IR-reflecting the next time you take it in for service.

madkow70

if you put on a polarized sunglasses, then you can actually see it.

NCMountie

The local dealer says "It should be based on the VIN"... I still am not convinced, because I don't see the marks that identify the areas permeable to radio waves. How can I or the dealer prove it?

NCMountie

Great idea!! let me try that....

trevttu76

I couldn't locate anything with a flashlight.
You are saying that if you look at the windshield from the outside you can identify the area (if there is one)? What do you see, a line or just a difference between the IR and non IR?

madkow70

if you look at it with a polarized sunglasses under daylight sun, you can see the area more easily.
you should see openings left and right of rear view mirror at the top.
and there's opening at the bottom of windshield center for radar detectors.

my original windshield for '20 GLS came with all three areas open.
I had a cracked windshield replaced a couple of years ago and had my dealer replace it with another genuine windshield. that one didn't have opening on the top sides anymore. only bottom center.

jtjbt20x

This is for my GLE, but you can get a general idea of what to look for.

https://mbworld.org/forums/gle-class...ml#post8408449

madkow70

just grab a pair of polarized sunglasses and look at it under the sun.
it's so obvious you can't miss it.