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I have a noise coming from my driver side rear wheel it keeps squeaking and humming as I drive it will appear above 25 mph. The noise is magnified when I travel with the windows down next to a barrier on the highway as the sound bounces from the wheel- to the barrier and back.
It sounds like a squeak, hum, hum, hum, squeak I just came from the shop and we spun the wheels on the lift and weren't able to replicate it, then we took the wheel off and gave it gas as well and it also wasn't there...But on the road test it was visible.
At that point they couldn't diagnose it and suggested it might be brakes/rotors.
It's annoying to drive with has anyone experienced this?
Couldn't hear anything in the videos, just wind noise.
Things like this are hard to diagnose remotely and could be any one of a number of things... Does the noise have a repeating pattern? Does it change frequency or pitch with road speed or engine speed? Does it occur under braking or when turning? Does it take place in all gears?
Were any of the other driveline components inspected or just the driver side rear? The issue could be coming from further up the chain like driveshaft guibo and propagating in a different part of the vehicle.
Couldn't hear anything in the videos, just wind noise.
Things like this are hard to diagnose remotely and could be any one of a number of things... Does the noise have a repeating pattern? Does it change frequency or pitch with road speed or engine speed? Does it occur under braking or when turning? Does it take place in all gears?
Were any of the other driveline components inspected or just the driver side rear? The issue could be coming from further up the chain like driveshaft guibo and propagating in a different part of the vehicle.
thanks, you gotta turn it up! I hear it clearly on my
phone. Let’s see.
yea, it’s repeating. Yea the frequency increases the faster I go. All gears, I need to see if it occurs doing braking, but definitely rolling in any speed above 25 mph.
Nope, just the rear wheel. They said it’s nothing critical and just a matter of tiny thing amplifying with speed. They would need more time to go deeper.
This is tough to test on the rear wheel since it's connected to the rear diff, but does that wheel spin more freely than the passenger side wheel? It would be a wheel bearing going out. Also try and shake the wheel while it's bolted in to see if there's any play or rattling.
I think the bearings are the bolt-in type and not press fit, so they would be easy enough to replace yourself if you've got the mechanical inclination.
This is tough to test on the rear wheel since it's connected to the rear diff, but does that wheel spin more freely than the passenger side wheel? It would be a wheel bearing going out. Also try and shake the wheel while it's bolted in to see if there's any play or rattling.
I think the bearings are the bolt-in type and not press fit, so they would be easy enough to replace yourself if you've got the mechanical inclination.
I mentioned the bearing. They said it's def not that.
1) Was your Mechanic a Mercedes Specialist with knowledge of Mercedes wheel bearings? Since it would only cost you a tube of lubrication grease, and a few moments of your time, I'd remove the wheel bearings and repack them. This is an often overlooked routine maintenance item that likely is overdue anyway. Often the retaining collar for the wheel bearings on Mercedes loosens and simply needs to be reset, which is just a matter of screwing the collar snug then backing off 1/8th of a turn and tightening the allen bolt.
2) Check the condition of the bushing on the Tie-Rod fitting on the lower end of the shock absorber. This is a common wear / failure part on the shock. You'll need to have the wheel off the car to check for any play and to see signs of any cracks in the rubber.
You're looking for wear in the spindle on the left side of the above picture.
Last edited by Aussiesuede; Jul 2, 2018 at 05:55 PM.
1) Was your Mechanic a Mercedes Specialist with knowledge of Mercedes wheel bearings? Since it would only cost you a tube of lubrication grease, and a few moments of your time, I'd remove the wheel bearings and repack them. This is an often overlooked routine maintenance item that likely is overdue anyway. Often the retaining collar for the wheel bearings on Mercedes loosens and simply needs to be reset, which is just a matter of screwing the collar snug then backing off 1/8th of a turn and tightening the allen bolt.
2) Check the condition of the bushing on the Tie-Rod fitting on the lower end of the shock absorber. This is a common wear / failure part on the shock. You'll need to have the wheel off the car to check for any play and to see signs of any cracks in the rubber.
You're looking for wear in the spindle on the left side of the above picture.
Originally Posted by LGAFF
My squeak turned out to be a lug nut that was too long, stock wheel/lug bolt and it was touching on every revolution.....
Yea, the shop only works on mb. thanks guys for the ideas, I’ll look into it and keep you posted. Hopefully the next person who gets it can do a search.
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