psssst air sound after replacing front airbags
Thread Starter
Junior Member
Joined: Feb 2018
Posts: 20
Likes: 3
2012 GL 350
psssst air sound after replacing front airbags
Update, today I took the car out and its not doing anything. Its at what I think is off-road height and stuck there (off-road is when you push the button on the console and the body rises a few inches). I took it on the highway at 40+ mph for 1/2 mile and it didn't lower. It my understanding that at 40+plus MPH it should lower to highway height for better gas mileage and lower center of gravity. It also my understanding that is the case on all model with or without ADS. Is that true? The only thing it does is release air (pssst sound like air brakes on trunk-pressure release) all the time when stop or driving. Here a link to the video of the 40+mph test. https://drive.google.com/open?id=1wW...bbbTmHT47E7-MI
Also is a computer reset required?
Also is a computer reset required?
MBWorld Fanatic!
Joined: May 2015
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From: Allentown, PA
'08 GL 320 CDI
I think you have to be going a little more than 40 for it to lower. BUT... is the button lit up red? Are you sure you are in "raised" mode? What happens when you push the button? I didn't have to do any type of reset when I replaced mine. From looking at the video, the gap above the tires looks about like the normal ride height. With a straight edge across the top of my tire, I have about 4" of clearance to the fender.
Thread Starter
Junior Member
Joined: Feb 2018
Posts: 20
Likes: 3
2012 GL 350
No I don't think I'm in the "raised" mode, when I pushed the button the truck raised a few inches, and made a loud pop sound and lowered to ground. I turned truck off and on, and it raised to what I would call normal height.. I drove it around the block and turned it off for the night, next day all look good. It just don't move anymore, I think when you open the rear door, the rear should lower some, it doesn't do that anymore. Even at 50+ plus it doesn't lower anymore. I was reading that the dealer can check to see if any code need to be cleared and test the system.
Thanks
Thanks
MBWorld Fanatic!
Joined: May 2015
Posts: 1,932
Likes: 291
From: Allentown, PA
'08 GL 320 CDI
At 50+, how do you know it's lowering? I think it only lowers about 3/4" of an inch which, for me anyways, is pretty much impossible to tell. There is no "indication" on the dash that it's lowering for this purpose.
That "pop" obvioulsy doesn't sound right. There could be a hole/rip in one of the bags that only opens when the truck is raised to expose the rip.
That "pop" obvioulsy doesn't sound right. There could be a hole/rip in one of the bags that only opens when the truck is raised to expose the rip.
