[TreyDrier]

That stinks, you're stuck with an older model exhaust instead of the one you paid for. Not sure what the difference is, maybe the straight pipes gives you a louder exhaust sound? Not a high pitch hum but a normal exhaust sound.

Here's a picture of the replaced exhaust system. It looks good and sounds even better. Trust me, nobody will notice.

 

[TreyDrier]

I know the sales manager at the local dealership. I sent him this forum thread and made an appt to take it in. The service manager and I went for a quick ride. He recognized the noise right away and did not say "it's normal". He said they changed the exhaust system (like I thought) and there have been many complaints mostly with the super charged GLE Coupe. So he looked it up and sure enough Mercedes posted a fix for the noise on the GLE 350. The fix is to go back to the prior model (ML 350) exhaust system. Problem is it won't look the same from behind as it does now but I don't care. I want the noise gone. Oh, and it IS covered uder warranty so they we're not the only ones complaining. It's not a recall so your dealership will have to look it up as an off-record fix. They ordered the parts and I will let you all know how it ends up after they fix it but so far this is good news.

 

[TreyDrier]

My GLE350 has same noise when RPM is on 1600 and if the car is running on 1600-1700 RPM, the noise is continuously bother me, I hate that noise very much. I went to dealer they say it is normal, but I think it is a software issue.

Or could it be an exhaust/tail pipe issue? I don't hear the high pitched hum coming from the engine. I heard it coming from the rear.

 

[TreyDrier]

Yes!! Both my wife and I noticed the high pitched whining noise right away. I turned in a 2014 ML 350 and it did not have the annoying engine sound. I am NOT happy. This is a $60k+ vehicle. I expect MB to fix this problem and stop saying its "normal".

 

[TreyDrier]

Are you all talking about the same noise? It sounds like a transmission problem in low gear. My last ML did not have this.
Why would changing the exhaust fix this?

It is NOT a transmission problem. Lets not complicate things here. It's a simple exhaust issue. If you don't hear it then disregard this thread.

 

[TreyDrier]

Can you please note what part number they replaced? My 2 day old GLE 350 has the same issue at 1000-1500 RPM. There is definitely an abnormal noise which is not noticeable at higher RPMs.

Thanks in Advance

I'm sorry I do not know the part numbers. I didn't think to ask but its all in the Mercedes service instructions. The service manager knew where to look as a "non-recall" no cost replacement.

 

[TreyDrier]

That stinks, you're stuck with an older model exhaust instead of the one you paid for. Not sure what the difference is, maybe the straight pipes gives you a louder exhaust sound? Not a high pitch hum but a normal exhaust sound.

Trust me, its worth it. You won't notice the difference.

 

[TreyDrier]

Yes the dealership fixed it at no cost. I just got back from a business trip. I will post pictures this weekend. The good news is the annoying noise is gone and it looks good. You won't notice the difference. Again, I will post pictures this weekend.