Do You Know What This Could Be?
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2026 AMG GT63 Pro
Do You Know What This Could Be?
Recently I've noticed and intermittent knocking noise coming from the front of my car...usually happens when the car articulates up and down with acceleration and deceleration..
tonight and today, it makes tons of knocking noise, and is even pronounced when going over bumps...
kind of scary any ideas?
tonight and today, it makes tons of knocking noise, and is even pronounced when going over bumps...
kind of scary any ideas?
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From: SEATTLE WASHINGTON USA
'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
Knock knock
Recently I've noticed and intermittent knocking noise coming from the front of my car...usually happens when the car articulates up and down with acceleration and deceleration..
tonight and today, it makes tons of knocking noise, and is even pronounced when going over bumps...
kind of scary any ideas?
tonight and today, it makes tons of knocking noise, and is even pronounced when going over bumps...
kind of scary any ideas?
Thread Starter
MBWorld Fanatic!
Joined: Apr 2007
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From: Orlando, FL
2026 AMG GT63 Pro
You can actually feel it in the floor and steering column when your paying attention...
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Alright guys - the epiphany came this morning!
As my girlfriend and I were driving to breakfast, the knocking became progressively worse and was no longer just when braking, turning or accelerating - it was every time the wheel spun...
So, pulled over, couldn't see anything (mind you the car was shaking like a bat out of hell) Checked suspension, brake pads (as I had them replaced tuesday)
Kept on driving and got even worse...Pulled over again, and checked the same things out...This time, went to my trunk, pulled out the golf clubs, and took out the tire iron...
GUESS WHAT??? I ONLY HAD ONE LUG NUT SCREWED INTO THE FRONT LEFT WHEEL, AND ONLY TWO ON THE RIGHT FRONT...
LESSON: NEVER GO TO GURLEY LEEP MERCEDES IN SOUTH BEND
I ended up screwing the other 7 lug nuts securely in place and guess what, NO MORE NOISE!!!
I can not believe that they failed to replace the bolts under factory spec - ie using a torque wrench...All of the bolts were completely loose and no force was holding the wheel on the axle...WOW
Let's for a second imagine what could have happened had I not caught this : i was on the highway doing 80 yesterday, and was driving past 100's if not 1000's of Notre Dame fans on the way to breakfast this morning...what if a 40-50lb wheel and tire had flown off and struck someone...??
As my girlfriend and I were driving to breakfast, the knocking became progressively worse and was no longer just when braking, turning or accelerating - it was every time the wheel spun...
So, pulled over, couldn't see anything (mind you the car was shaking like a bat out of hell) Checked suspension, brake pads (as I had them replaced tuesday)
Kept on driving and got even worse...Pulled over again, and checked the same things out...This time, went to my trunk, pulled out the golf clubs, and took out the tire iron...
GUESS WHAT??? I ONLY HAD ONE LUG NUT SCREWED INTO THE FRONT LEFT WHEEL, AND ONLY TWO ON THE RIGHT FRONT...
LESSON: NEVER GO TO GURLEY LEEP MERCEDES IN SOUTH BEND
I ended up screwing the other 7 lug nuts securely in place and guess what, NO MORE NOISE!!!
I can not believe that they failed to replace the bolts under factory spec - ie using a torque wrench...All of the bolts were completely loose and no force was holding the wheel on the axle...WOW
Let's for a second imagine what could have happened had I not caught this : i was on the highway doing 80 yesterday, and was driving past 100's if not 1000's of Notre Dame fans on the way to breakfast this morning...what if a 40-50lb wheel and tire had flown off and struck someone...??
Last edited by AMGTTV8; Oct 3, 2009 at 04:52 PM.
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Thread Starter
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I'll be interested to see what is said on the call I am supposed to get from the corporate rep by 3 on Monday....
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From: SEATTLE WASHINGTON USA
'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
Blood curdling
It would be well worth your time to examine the wheel bolt threads for damage and also the wheels themselves for any deformation of the bolt holes. All that banging might have damaged something and the dealer is on the hook for any repairs. Actually, the tech will be responsible.
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From: Orlando, FL
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...
It would be well worth your time to examine the wheel bolt threads for damage and also the wheels themselves for any deformation of the bolt holes. All that banging might have damaged something and the dealer is on the hook for any repairs. Actually, the tech will be responsible.
It would be well worth your time to examine the wheel bolt threads for damage and also the wheels themselves for any deformation of the bolt holes. All that banging might have damaged something and the dealer is on the hook for any repairs. Actually, the tech will be responsible.
Nonetheless, you raise good points above, some of which I had thought of before...I guarantee bolts are stressed, as well as probably the wheel hubs...knocking around cant be good for the strength of metal.
This was one hugely averted disaster...Thank God that I was given the thought of checking the lug nuts...
Thanks for your input!
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2008 C300 Sport, RWD, US
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honestly, even if that particular MB is the only place that has touched your car, you have no way of proving that they forgot to tighten up the bolts.
the harsh reality is that once you leave the dealership, you can blame them anymore. for all they know, you could have loosened them yourself or gone to another tire place. really gotta check the whole car when you get it back...
the harsh reality is that once you leave the dealership, you can blame them anymore. for all they know, you could have loosened them yourself or gone to another tire place. really gotta check the whole car when you get it back...
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honestly, even if that particular MB is the only place that has touched your car, you have no way of proving that they forgot to tighten up the bolts.
the harsh reality is that once you leave the dealership, you can blame them anymore. for all they know, you could have loosened them yourself or gone to another tire place. really gotta check the whole car when you get it back...
the harsh reality is that once you leave the dealership, you can blame them anymore. for all they know, you could have loosened them yourself or gone to another tire place. really gotta check the whole car when you get it back...
So you are saying that I should also some how be expected to inspect the brakes to see if the pads were installed correctly??? I don't know what to look for - that's why I took the car there. If I knew how to change the brakes, I would have done it myself.
As if I'm going to go buy a torque wrench to make sure the dealer put my wheels back on correctly after I just paid him $300 to do just that...
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If I get in an accident between now and when I have time to get back to Indy to get my car checked out by a proper store because my brakes go out on me whoever is a lawyer please be ready to call.
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yes, I know you cant check everything about the car. I know nothing when it comes to cars mechanically, but I am saying that, yes, we put a lot of trust in those who service our cars, but they will make mistakes.
I am not justifying what they did, but I am saying you would not have a case because you cannot prove that the bolts were loose when you left the dealership. Once you leave, the blame cannot be put on them because who knows what you do to your car once you leave? just reality.
I am not justifying what they did, but I am saying you would not have a case because you cannot prove that the bolts were loose when you left the dealership. Once you leave, the blame cannot be put on them because who knows what you do to your car once you leave? just reality.
Thread Starter
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From: Orlando, FL
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yes, I know you cant check everything about the car. I know nothing when it comes to cars mechanically, but I am saying that, yes, we put a lot of trust in those who service our cars, but they will make mistakes.
I am not justifying what they did, but I am saying you would not have a case because you cannot prove that the bolts were loose when you left the dealership. Once you leave, the blame cannot be put on them because who knows what you do to your car once you leave? just reality.
I am not justifying what they did, but I am saying you would not have a case because you cannot prove that the bolts were loose when you left the dealership. Once you leave, the blame cannot be put on them because who knows what you do to your car once you leave? just reality.
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What exactly did you go into the dealership for though? Was it for something that could have required them to remove the wheels? It happened only in the front so it means that it could have been a rotation or something they did to get to the wheelwell?
We're all glad you didn't get into an accident from this and let this be something that we remember next time we pick our cars up from anything like dealerships. We be sure we check our lugnuts when we inspect our tire pressures! :lol:
We're all glad you didn't get into an accident from this and let this be something that we remember next time we pick our cars up from anything like dealerships. We be sure we check our lugnuts when we inspect our tire pressures! :lol:
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From: br00klynnn.
C204
honestly, even if that particular MB is the only place that has touched your car, you have no way of proving that they forgot to tighten up the bolts.
the harsh reality is that once you leave the dealership, you can blame them anymore. for all they know, you could have loosened them yourself or gone to another tire place. really gotta check the whole car when you get it back...
the harsh reality is that once you leave the dealership, you can blame them anymore. for all they know, you could have loosened them yourself or gone to another tire place. really gotta check the whole car when you get it back...
The dealership is probably going to investigate who worked on your car, issue an apology to you, possibly compensate for the mishap, and the tech is going to get screamed at.
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Got brake work done on Tuesday, started noticing noise on Wed and Thurs (thought it was the torsion bar or whatever) and the noise and clanking became progressively worse leading up to Saturday when I discovered what the real issue was...
