Constant Ventilation Noise / HVAC / AC / CLS 550 4matic
Thread Starter
Newbie
Joined: Mar 2016
Posts: 14
Likes: 1
2013 Mercedes-Benz CLS 550 4Matic
Constant Ventilation Noise / HVAC / AC / CLS 550 4matic
Hi Guys,
I have a constant noise problem coming from the driver side and passenger side vents.Although it can be heard better from the driver side.
When the car is started and the AUTO circulation is on with the AC option, it's quiet and runs fine, you just hear fans. 30 seconds into driving, you start to hear what I can only describe as air escaping through a hose that is wet. It's a trickling / seeping sound that is none stop. You can usually hear it when the furnace / AC turns on in your house, a air sucking in / slurping sound and then you would just hear your system running, but not with this.
The AC option can be on or off and you still here it if the fans are on AUTO and circulating at low speeds. At fan speeds higher that 3 you don't hear it due to the loud sound of air rushing.
My car is a CLS 550 4 Matic 2013. The dealership tells me this is normal for the CLS. I call BS, a car MSRP close to 90k and this is a standard annoying sound? I driven cheaper cars with no ventilation noise.
They said they see it on CLS models and if I can find someone that doesn't have the issue they will look into it.
I have completely looked through all of the forums to see if anyone has an issue like this that relates and can't find an exact situation. Some have mentioned bad ventilation motor, leaves stuck in the system itself and other items.
Any feedback or experiences are greatly appreciated.
Thank you.
I have a constant noise problem coming from the driver side and passenger side vents.Although it can be heard better from the driver side.
When the car is started and the AUTO circulation is on with the AC option, it's quiet and runs fine, you just hear fans. 30 seconds into driving, you start to hear what I can only describe as air escaping through a hose that is wet. It's a trickling / seeping sound that is none stop. You can usually hear it when the furnace / AC turns on in your house, a air sucking in / slurping sound and then you would just hear your system running, but not with this.
The AC option can be on or off and you still here it if the fans are on AUTO and circulating at low speeds. At fan speeds higher that 3 you don't hear it due to the loud sound of air rushing.
My car is a CLS 550 4 Matic 2013. The dealership tells me this is normal for the CLS. I call BS, a car MSRP close to 90k and this is a standard annoying sound? I driven cheaper cars with no ventilation noise.
They said they see it on CLS models and if I can find someone that doesn't have the issue they will look into it.
I have completely looked through all of the forums to see if anyone has an issue like this that relates and can't find an exact situation. Some have mentioned bad ventilation motor, leaves stuck in the system itself and other items.
Any feedback or experiences are greatly appreciated.
Thank you.
Thread Starter
Newbie
Joined: Mar 2016
Posts: 14
Likes: 1
2013 Mercedes-Benz CLS 550 4Matic
Hey Glenn S.
Same thing, still that constant noise running with heat or cold. I also can hear it when the fans are high up, I don't think it's the fans that are causing the noise. Something in the background outside of the AC maybe.
Here are some videos I uploaded, mind you it's my phone right next to the center vents. The noise can be heard from any of the vents though.
Thanks.
Same thing, still that constant noise running with heat or cold. I also can hear it when the fans are high up, I don't think it's the fans that are causing the noise. Something in the background outside of the AC maybe.
Here are some videos I uploaded, mind you it's my phone right next to the center vents. The noise can be heard from any of the vents though.
Thanks.
Thread Starter
Newbie
Joined: Mar 2016
Posts: 14
Likes: 1
2013 Mercedes-Benz CLS 550 4Matic
Check Videos Please!
Hey Guys,
Could you please check out the videos and let me know if you've ever heard this sound. If you hear it now or have a CLS with the same issue, any feedback would be great.
Thank you
Could you please check out the videos and let me know if you've ever heard this sound. If you hear it now or have a CLS with the same issue, any feedback would be great.
Thank you
Trending Topics
Member
Joined: Jan 2007
Posts: 158
Likes: 0
From: Toronto, Ontario
2006 CLS500, 21" Interad Turismo Wheels, Renntech Lowering Module
This is a different sound than what I had, mine was constant at any fan speed or temperature.
However I has a 2006 CLS500 and had a sound similar to this, more of a whiny noise though, it turned it was the fan that was faulty. Sometime the bearings in the fan cease or just give so you get some weird sounds coming from it. I would think it's that because it doesn't sound like you have any heat or cooling problems and the sound goes away when you increase the fan speed, which is what the fan in my 2006 CLS500 used to do, only at low speeds would you hear it, increase the fan speed and it goes away......
However I has a 2006 CLS500 and had a sound similar to this, more of a whiny noise though, it turned it was the fan that was faulty. Sometime the bearings in the fan cease or just give so you get some weird sounds coming from it. I would think it's that because it doesn't sound like you have any heat or cooling problems and the sound goes away when you increase the fan speed, which is what the fan in my 2006 CLS500 used to do, only at low speeds would you hear it, increase the fan speed and it goes away......
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
