GLE43 Coupe (C292) 2016 - Present (Includes GLE450 Coupe)

Cabin "knock" on GLE43 Coupé...

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Old Feb 4, 2017 | 09:24 AM
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Cabin "knock" on GLE43 Coupé...

We're definitely enjoying our new GLE43 Coupé!

However, one thing that we've noticed is that there is a clunking/knock sound that appears to come from the drivers side / seat area. The best way to describe it is that it sounds like there's a marble that's rolling around on the floor, and hitting a wall when it stops, making the clunking/knock sound. It's very repeatable. All you have to do is just slowly weave back and forth down the road and you will hear it "hitting" on every steering change. It also happens every time that you turn a corner into a driveway or parking lot, where the vehicle is going thru an incline.

We need to take it back to the dealer for a couple of things that we've noticed, and I'm wondering if anyone else has experienced this? I'd like to give the dealer a heads up on what the issue might be if someone has an idea.

It definitely is annoying, and needs to be fixed...
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Old Feb 4, 2017 | 09:41 AM
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maybe one of the plugs/connectors under your seat came loose?
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Old Feb 4, 2017 | 09:55 AM
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Originally Posted by heron25
maybe one of the plugs/connectors under your seat came loose?
Good thought. I've peeked under there a little bit and felt around some, but haven't gone into full investigation mode. I didn't feel anything. Everything that I THINK is supposed to work, works on the seat...
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Old Feb 4, 2017 | 10:26 AM
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I had something similar with a sound, but it was a small round container of lip medex that was in the area next to the cupholders. It was rolling around and it took me a few days to pin it down because the sound kind of echoed around a bit. I would suggest to look in your glove box and other storage compartments if you haven't already, for something that is rolling around . Just a thought...
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Old Feb 4, 2017 | 10:31 AM
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Originally Posted by Chefcct
I had something similar with a sound, but it was a small round container of lip medex that was in the area next to the cupholders. It was rolling around and it took me a few days to pin it down because the sound kind of echoed around a bit. I would suggest to look in your glove box and other storage compartments if you haven't already, for something that is rolling around . Just a thought...
Another good thought. However, I noticed this before we ever put anything in the vehicle.

I didn't mention this in my original post, but to me, the sound seems to be coming from the drivers side B-pillar, but you're right, it could be coming from somewhere else, and just resonating there.

I just took a flashlight, and did a thorough investigation under the seat, and I didn't see anything unhooked, or loose, or out of the ordinary. All that to say, though, there is a LOT of stuff under there, and it's not exactly easy to see under there either...
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Old Feb 4, 2017 | 04:27 PM
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I have the same thing in a gle63. It is in the pillar by the drivers side left ear. Thought it was the seatbelt system. But it's not. It is inside the pillar. It is annoying AF. I am losing my mind.
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Old Feb 4, 2017 | 05:28 PM
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Originally Posted by johnnyderm
I have the same thing in a gle63. It is in the pillar by the drivers side left ear. Thought it was the seatbelt system. But it's not. It is inside the pillar. It is annoying AF. I am losing my mind.
YES!! YES!!! YES!!!!

I thought that it was the seatbelt system also! Dang.

Have you had yours into the dealer???
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Old Feb 7, 2017 | 04:32 PM
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Took it to dealer. They wont fix it. Say it is normal. I am getting ready to get rid of this truck at this point. Looking for an X5M as a swap.
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Old Feb 7, 2017 | 05:19 PM
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Originally Posted by johnnyderm
Took it to dealer. They wont fix it. Say it is normal. I am getting ready to get rid of this truck at this point. Looking for an X5M as a swap.
OK, it's "normal". Then tell me what it is!! I just want to know what it is, BEFORE I accept normal...
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Old Feb 7, 2017 | 05:38 PM
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Originally Posted by johnnyderm
Took it to dealer. They wont fix it. Say it is normal. I am getting ready to get rid of this truck at this point. Looking for an X5M as a swap.
I just have one small problem, though. I CAN'T trade mine in, because my wife can't hear the knock, and she doesn't think that there's anything wrong with it!!
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Old Feb 9, 2017 | 02:17 PM
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Benz Manhattan had a snotty person call me to say the car noise is normal. Basically telling me to F-off before I can speak. I just got off the phone and didnt accept the response.

I finally got a call from another rep saying they found the drivers side seat belt faulty and are replacing it (gle63). I presume that caused the knock but who knows.

In any case, not ideal service at manhattan...

I will report back if it works or not soon
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Old Feb 9, 2017 | 02:51 PM
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Originally Posted by johnnyderm
Benz Manhattan had a snotty person call me to say the car noise is normal. Basically telling me to F-off before I can speak. I just got off the phone and didnt accept the response.

I finally got a call from another rep saying they found the drivers side seat belt faulty and are replacing it (gle63). I presume that caused the knock but who knows.

In any case, not ideal service at manhattan...

I will report back if it works or not soon
PLEASE PLEASE report back if this works or not. If you had asked me, I would have assumed that it was in the seat belt mechanism as well. There is a weight in there that goes forward/sideways when you're in an accident to tighten up the belts...
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Old Feb 11, 2017 | 01:42 PM
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have a similar sound, but it appears to be down low only perceptible on a low speed turn. from day one. ron
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Old Feb 11, 2017 | 02:40 PM
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Originally Posted by rcsjr
have a similar sound, but it appears to be down low only perceptible on a low speed turn. from day one. ron
Mine is exactly the same way. However, it is VERY perceptible at low speeds, mostly involving turns. Mine is very loud, very noticeable, and VERY annoying...
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Old Feb 12, 2017 | 11:25 AM
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Roof maybe
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Old Feb 12, 2017 | 01:54 PM
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Originally Posted by nookie
Roof maybe
99.9% sure it's in the B-pillar.
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Old Feb 12, 2017 | 03:45 PM
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Originally Posted by cadman_ks
99.9% sure it's in the B-pillar.
Ugh...Jeep had that one time on Jeep GC's.
Roofliner , whole shabang had to come apart on few hundred units where the weld joints needed to be redone, along with some compound.

Hopefully it's just something simpler!!

Last edited by nookie; Feb 12, 2017 at 04:20 PM.
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Old Feb 12, 2017 | 06:06 PM
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Originally Posted by nookie
Ugh...Jeep had that one time on Jeep GC's.
Roofliner , whole shabang had to come apart on few hundred units where the weld joints needed to be redone, along with some compound.

Hopefully it's just something simpler!!
Oh dang, the thought of having bad welds never crossed my mind, and that would be a BAD deal indeed...
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Old Feb 22, 2017 | 09:23 AM
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Well that didn't work. I am emotionally beyond being angry. I just come to accept what I got. Oh well. Last AMG Benz for my family.

I got a call from Krista who said in more words "too bad, you have a knock, deal with it, it's normal". Then I find out they admit there is a knock and that is not normal. They go on to replace the seat belt and hold the car a week. I get car back, dive a mile, the noise is back. They claimed to have road tested it. They must have had the music on for their joy ride because at the end they say "Excessive noise no longer present" although it is.


Last edited by johnnyderm; Feb 22, 2017 at 09:24 AM. Reason: removed pic
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Old Feb 22, 2017 | 09:35 AM
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Originally Posted by johnnyderm
Well that didn't work. I am emotionally beyond being angry. I just come to accept what I got. Oh well. Last AMG Benz for my family.

I got a call from Krista who said in more words "too bad, you have a knock, deal with it, it's normal". Then I find out they admit there is a knock and that is not normal. They go on to replace the seat belt and hold the car a week. I get car back, dive a mile, the noise is back. They claimed to have road tested it. They must have had the music on for their joy ride because at the end they say "Excessive noise no longer present" although it is.

Well, that's not very encouraging...
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Old Feb 22, 2017 | 10:28 AM
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Originally Posted by johnnyderm
Well that didn't work. I am emotionally beyond being angry. I just come to accept what I got. Oh well. Last AMG Benz for my family.
Try a different dealer. If that fails, contact MB Customer Support. Just keep going up the ladder until you get it fixed.

I had an issue of warped rotors on a previous car. They fixed them twice under warranty. When the problem came back again, they accused me of "riding the brakes", like I'm some kind of idiot. Before it was all over, I was dealing with the regional sales manager for the entire east coast! He personally sat in the car while I test drove it so he could see and feel the pulsation of the brakes and steering wheel. He acknowledged the problem and replaced the rotors again. A year or two later, the problem occurred again. I finally realized it was a design default. No matter how many times they replaced the rotors, it would only continue to happen AS LONG AS THEY WERE USING THE SAME OEM ROTORS. I found a high performance shop online. I ordered a set of third party cross drilled rotors from Canada. The problem never happened again.

OK, OK....I know I ended up coming out of pocket for the fix. But the moral of the story is this. I never gave up until they exhausted every possible remedy. The only way they could have fixed it was to redesign the part. That wasn't going to happen until the next generation of that vehicle.
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Old Sep 8, 2018 | 10:23 AM
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Any update for the fix? Just bought a 2017 gle43 coupe last week that had the same noise issue. Thanks.
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