2017 GLE 350 4MATIC Start up noise
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2017 Mercedes Benz GLE 350 4MATIC
2017 GLE 350 4MATIC Start up noise
I press the brake down and press the start button, as the engine is starting up I hear a clunking sound for a couple of seconds. This happens occasionally and not every time, anyone have similar experiences? I took the truck in to Mercedes and they could not verify the noise, they also checked the engine and everything was good to go.
Out Of Control!!
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From: unbegrenzt
2017 GLE350 4MATIC
Need more information. Where is the noise coming from? Exactly when does it happen? How long does it last? Can you force the noise to come and go, or to change intensity?
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Joined: Nov 2007
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From: Washington D.C. area
16 GLE400 4matic
Clunking noise? Not a tap tap or clicking noise?
It can be anything... Need more information.
What motor oil velocity and weight your using?
It can be anything... Need more information.
What motor oil velocity and weight your using?
Last edited by amusa; Oct 22, 2020 at 05:38 AM.
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2017 Mercedes Benz GLE 350 4MATIC
Question: How hard to I need to press down on the brake pad to start the engine, I floor it until it can't go any further and then press and release the start button....maybe I'm releasing my foot off the brake pad too soon or not pressing down hard enough?????!!!!!
Thread Starter
Newbie
Joined: Oct 2020
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2017 Mercedes Benz GLE 350 4MATIC
Super Member
Joined: Nov 2007
Posts: 501
Likes: 138
From: Washington D.C. area
16 GLE400 4matic
The way how you describe it sounds like a rod knock. Rod or main bearing is loose would be my guest. You said you don't hear it all the time on start up. I question it and you have a 2017. That is very odd.
I just thought about the drive shaft. I would inspect the Drive Shaft Flex Disc first.
I just thought about the drive shaft. I would inspect the Drive Shaft Flex Disc first.
Last edited by amusa; Nov 4, 2020 at 05:57 AM.
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From: Wisconsin
2016 GLE 350 4Matic, 2019 GLS 450 4Matic
Noise coming from engine bay. I press the brake and press the start button and as soon as the engine starts I hear a clunking noise and lasts for only a couple of seconds. I cannot duplicate the noise as it happens once in a while, and that is why Mercedes dealership is unable to find the issue. Noise does not change in intensity.
Question: How hard to I need to press down on the brake pad to start the engine, I floor it until it can't go any further and then press and release the start button....maybe I'm releasing my foot off the brake pad too soon or not pressing down hard enough?????!!!!!
Question: How hard to I need to press down on the brake pad to start the engine, I floor it until it can't go any further and then press and release the start button....maybe I'm releasing my foot off the brake pad too soon or not pressing down hard enough?????!!!!!
I've had noises similar in other cars where the issue has been a component such as a heat shield that vibrates/rattles when the torque of the starter motor is starting the engine. I wouldn't suspect something like the drive shaft that isn't moving when the car is stationary.
Try listening under the hood closest to where you suspect the noise is coming from while having someone start the car for you. I think the good news is that if the problem isn't constant then it won't affect driving at this time.
