Penn

I had acoustic glass fitted by the dealer last week. Both front windows were replaced.

The difference is very noticeable, especially in strong cross winds.

MercedesTheBest

i have it in mine, although i didn't order it. i am in Canada though so who knows.

ble2716

Really.
I had to ordered mine.
It's a $250 option, so it's not that expensive.

BCRCornet

Ditto, for me.

GLC220Exclusive

MercedesTheBest

hmm weird. maybe it depends on the amount of other options you get then. i got quite a few options. for the acoustic glass, though, i know i never ordered it, nor is it on the options list. but i do have it.

ble2716

It's great that you get the acoustic glass and did not have to pay for it.

I consider my GLC43 is fairly well equipped.
It has premium, premium plus, heated steering wheel, carbon fibre console, rear heated seats, rear sunscreen, lighting package, 360 cameras, Burmester sounds, leather seats and acoustic glass.
(That's all I can I remember for now). LOL

easternshore

Has anyone determined what acoustic glass is? I do not have it, but am I really missing anything?

dieseldoc

Glass with a special layer in it for sound. My GLC has it. Did not do anything special to get it. My car is a 2016 that is the equivalent to a 17 P3 with park assist/leather/pano/burmester and 19 inch wheels.

BCRCornet

http://www.glcforums.com/forum/194-e...tic-glass.html

dieseldoc

Thank you that is a better description than mine. I do know it was suppose to be standard on US GLCs in 2016

gainful

Mine is 2017 model with P1 package only. Windshield is acoustic glass and front door windows are not.

Recently got a rock chip on my windhshield, and thinking about replacing it. Am I going to be able to replace it with Acoustic glass as well?

larrypmyers

Am interested as to how you identified your windshield as acoustic?

gainful

It says "acoustic" on it at the right bottom corner

larrypmyers

First post I've seen reporting an acoustic windshield.

Make sure the shop understands your vehicle has an acoustic windshield and you want an identical replacement.

Seems strange that your front door windows are not acoustic but the windshield is. I would think they go together.

Sigp232

My 17 GLC was delivered 2 weeks ago to my dealer after a 5 month wait. And I have the front windshield both front driver and passenger glass say acoustic.
Back sides and back window say nothing.

easternshore

Acoustic windshield only. Strange. Build date 11/16.

larrypmyers

Lack supporting data, but seems logical to me if the vehicle has an acoustic windshield it would also have acoustic driver/passenger glass.

If my vehicle were configured otherwise, a discussion would be in order with dealer personnel.

Sigp232

My built date is 11/24 we're 8 days apart. You should make a visit to your dealer and see why the difference.

BobbyT

I sent an email to my dealer, Walter's Mercedes-Benz, in Riverside, CA on January 26, advising them of wind noise in my GLC300, and providing the service bulletin ID. They called today, saying that the parts were in (new door glass for both front doors, along with some seals), and scheduled an appointment for installation on February 2. I already have the acoustic glass windshield. What great service!

I loaded a decibel meter app on my iPhone, so I'll check the sound level before and after.

Ddmccormack

can you provide service bulletin ID? I didn't see earlier in thread...many thanks!

BobbyT

Service Bulletin # L172.10-P-062500

BobbyT

I picked up my car this morning after the work called for in the service bulletin was done, which was to replace both front door windows with acoustic glass. I checked the sound level in the car before and after the work using a decibel meter downloaded to my iPhone. Here is what I recorded. All levels are one minute averages.


Idling in driveway, AC off: Before 48 Db, After 42 Db

Freeway speed, smooth asphalt: Before 78 Db, After 75 Db

Freeway speed, rough concrete: Before 83 Db, After 80 Db

The old front door glass measured 5 mm thickness, new is 3.9 mm.

gainful

Can you share the bulletin?

BobbyT

I don't have the contents of the bulletin, only the reference number.