HUD - Double image with navigation
The current speed etc aren’t the sharpest, but don’t see any double images with the larger bold text. Just want to be sure before contacting my dealer. Thanks!
Polarized glasses dim the HUD image because it is already polarized. You can see this by tilting your head or turning your glasses by 90 degrees. The HUD image brightens.
Since all polarized glasses are polarized in the same alignment to maximize the dimming of the sky, why not polarize the HUD display in a different direction to get maximum brightness when wearing polarized glasses?




Polarized glasses dim the HUD image because it is already polarized. You can see this by tilting your head or turning your glasses by 90 degrees. The HUD image brightens.
Since all polarized glasses are polarized in the same alignment to maximize the dimming of the sky, why not polarize the HUD display in a different direction to get maximum brightness when wearing polarized glasses?
I sure wish I didn't have to buy a new pair of sunglasses just to see my head up.
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This is the best photo I could get while my wife was driving. Needed to show the turn by turn — the smaller navigation text is almost unreadable when you’re in the drivers seat. I’m planning to compare with my friend’s 25 GLE 450 this weekend.
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https://mbworld.org/forums/gls-class...ml#post8905660
Did you try cleaning the HUD screen on your dash with a good microfiber cloth?
Last edited by wildta; Aug 30, 2025 at 02:23 PM.




Polarized glasses dim the HUD image because it is already polarized. You can see this by tilting your head or turning your glasses by 90 degrees. The HUD image brightens.
Since all polarized glasses are polarized in the same alignment to maximize the dimming of the sky, why not polarize the HUD display in a different direction to get maximum brightness when wearing polarized glasses?
As for your double image. Thoroughly clean the glass on the inside with an alcohol solution. Because it's just light reflection off the windshield, the film that builds on the glass from the gassing out of the plastics will distort the reflection.
Last edited by superswiss; Aug 30, 2025 at 03:26 PM.
https://mbworld.org/forums/gls-class...ml#post8905660
Did you try cleaning the HUD screen on your dash with a good microfiber cloth?
As for your double image. Thoroughly clean the glass on the inside with an alcohol solution. Because it's just light reflection off the windshield, the film that builds on the glass from the gassing out of the plastics will distort the reflection.
As for the HUD image horizontal polarization being from refelction, I think that is an oversimplification. There is more material science to it that that, including windshield coatings. Kia has rotated the polarization of their HUD to 70 deg off horizontal.




As for the HUD image horizontal polarization being from refelction, I think that is an oversimplification. There is more material science to it that that, including windshield coatings. Kia has rotated the polarization of their HUD to 70 deg off horizontal.
As far as reflection polarization goes, no it's how I explained it, but a windshield is not completely flat, so you can use curvature to try to influence it and even with polarized sunglasses, you can still see the HUD partially, because again, the windshield isn't 100% flat and the surface also isn't perfectly smooth, so there is always some light that bounces off in different directions, but the majority is horizontal. So, yes you can roughen up the class or put some kind of coating on it that makes the glass less smooth, so more of the light gets reflected in different directions. I'm just saying it's ultimately flawed, because it relies on reflection. I'm waiting for transparent displays to go mainstream.
Last edited by superswiss; Aug 30, 2025 at 07:41 PM.




As for the HUD image horizontal polarization being from refelction, I think that is an oversimplification. There is more material science to it that that, including windshield coatings. Kia has rotated the polarization of their HUD to 70 deg off horizontal.
As far as reflection polarization goes, no it's how I explained it, but a windshield is not completely flat, so you can use curvature to try to influence it and even with polarized sunglasses, you can still see the HUD partially, because again, the windshield isn't 100% flat and the surface also isn't perfectly smooth, so there is always some light that bounces off in different directions, but the majority is horizontal. So, yes you can roughen up the class or put some kind of coating on it that makes the glass less smooth, so more of the light gets reflected in different directions. I'm just saying it's ultimately flawed, because it relies on reflection. I'm waiting for transparent displays to go mainstream.
Last edited by superswiss; Aug 30, 2025 at 08:06 PM.
Thanks for the info — I compared to a friends 25 GLE450 and it was way sharper… definitely an issue with mine
Anyone else experiencing this issue and/or were you told the same thing? I would assume that this would take more than just a software update.
Thank you!
That being said, it's not something I would want in my car. I found it to be distracting. Nothing wrong with it, just personal preference.
That being said, it's not something I would want in my car. I found it to be distracting. Nothing wrong with it, just personal preference.
I may end up taking it to another dealer or calling MB corporate to get things moving quicker.







