Glass panel between sunroof and windshield cracking

[Ggpe]

Are you sure ?
The back panel in my G80 (not G70 though) is glass.
I would think glass was chosen for a reason. A piece of sheet metal may not be easier or more cost effective to install. A piece of sheet metal may also be more difficult to break in (remove) for repair of what lies behind. Bit far fetched, still a possibility.

Glass will also be a better sound attenuator. To achieve this a sheet of metal needs to have some sound deadening material sprayed or glued to it. Otherwise during rain or hail it will ring like a drum.

On closer examination, (on my vehicle) I can see a small part of the panel's underside is screen printed and the rest is clear and reveals black painted matte metal a short distance below.

From this I deduce the following:
1) The small part which is screenprinted hides, most likely, the roof mechanism. And everything mechanical needs access for servicing/repair. I am sure glass is easier to remove by just breaking it and remove fragments from the edges with special solvents. I know this from the building industry. But, this is only an assumption on my behalf.

2) The matte painted steel I can see through the “not printed„ sections of the glass is the stiffening brace to stop cabin flex. (As is the middle section of the roof.)

Why is this glass panel not painted black all the way on the underside I hear you say ?
Glass, and particularly toughened glass, does not play nicely when this is the case. Heat buildup will be enormous, expansion also and in case of tight fitment requirements to stop leakage this would not be good.

I have, I think, exhausted all possibilities and leave it at that.

I took a light out n found the panel strips above the front doors are glass also! The rear half of top is not. Obviously, half of the is glass n half is not! My only question now is one I need answered by Genesis and has nothing to do with engineering.

This site had been very helpful and insightful!

 

[Ggpe]

There is no difference in the appearance of this panel and the non-glass roof behind the sunroof. My thinking, after a little research, is that Genesis changed the sunroof design in 2018 due to shattering, and extending the sunroof warrantee on pre-2018 models. Unfortunately, perhaps, their ‘fix’ did not address the glass panel that is not part of the moveable sunroof. I am not an engineer, so if there are other cars with a glass panel in front of their sunroofs, then there must becgood reason.

I hope to hear something soon. Lol! I am not an engineer! I appreciate your insights! Thank you very much!

I just picked up my car after Hyundai replaced the shattered glass! Genesis did not charge me, which was wonderful! COVID has decimated service area, so replacement took longer, but that is resonable. I think Genesis/Hyundai did a very good analysis of the situation and determined it was covered under the sunroof warrantee, although not part of the sunroof itself!
Now, this experience has me wondering, does the TESLA have the same untempered glass??
A baseball from a little league gane could cost $30k or more to replace the entire roof!
Well… hats off to Team Genesis!!

 

[G70in21]

Why it is there has a reason, no doubt. In my mind there are two cases to consider.
1) There is something fitted which is needed for the operation of the sunroof.
2) The glass roof was too problematic to install all the way to the front and not introducing cabin flex.

While both cases are good candidates I think No. 2) is the more plausible one. But it is also possible both share equal billing.

Since this space has to be covered I think the good people at Genesis thought it will look better with all glass front to back rather than introducing another material. If the windscreen can hold up to every day driving there should be no reason this panel will not.

I have to laugh at the windscreen comment.

I had my 22 G70 for 3 days, < 400 miles, I already have to replace my windscreen due to something so small I couldn't even see it ...just heard the pop and saw the split down the window.

 

[Ggpe]

When I was picking up my G70 at the dealership,I looked at a model that has a total glass top with a sunroof! And someone posted here that Tesla’s are glass tops.

If I was going to give anyone advice today, I would tell Tesla drivers to stay awsy from Little League or High School baseball games cuz an errand ball landing atop their cars might cause many thousands to replace!! Lol!

 

[dtuna42]

2021 G70: mine also has a glass panel between windshield and sunroof panel. I can see some things in there, looks like sensors of some kind. I would LOVE to know what parts, sensors, mechanisms are under there..

 

[Ggpe]

2021 G70: mine also has a glass panel between windshield and sunroof panel. I can see some things in there, looks like sensors of some kind. I would LOVE to know what parts, sensors, mechanisms are under there..

The panels from both front doors are also untempered glass. My best effort at trying to understand the reason Genesis used this glass was to facilitate the sun roof for some reason. I know the panels are removable somehow, allowing access to ‘stuff’ that metal panels cant provide. I still do not understand the need for ‘untempered’ glass. I did notice the glass, once completely shattered, flexed very well; almost like rubber! I reckoned it could actuall be peeled off, once shattered.

i dont think I will buy another car with untempered glass panelling. I will stick with hardtops only. Sunroof is not worth the money to me.