- Mercedes-Benz C-Class and C-Class AMG: Why is My Power Steering Noisy?
Guide to diagnose trouble and recommended solutions
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Squeaking Noise when turning steering wheel
Its the pressure relief valve that's making the noise. However I know that only a few things could cause the squeak:
-Oxygen mixing with the fluid
-particles in the liquid (although less likely)
-Valve wearing out
But when I asked the dealership garage to fix it, they said it was fine and didn't need to be fixed.
Is this correct, or are they hoping that it causes a bigger problem in a few months after my warranty finishes?
Also is this system covered under the service care plan? (I don't have a copy of mine anywhere
)
If you have another dealer close I would obtain a second opinion.
Open the bonnet , turn the wheel & check where the squeek is coming from. Could be the auxilliary belt which is an easy fix.
Mine was replaced while in warranty.

Observe temp & level on cap dipstick.
Last edited by Glyn M Ruck; Dec 3, 2011 at 04:12 PM.
The problem is friction, squeaky noise does not need changing part. (If the noise is just like rubbing plastic material under pressure especially close to end part of steering wheel's tour)
The problem is about the steering gear. NO NEED TO BE CHANGED. There is a rod btw the wheel and steering gear and a plastic cover to protect it from dust and water (not the axis).
Open it, you will see a rod under it and an O ring made of plastic surrounding it. GREASE IT. That's it..
I will put the picture for you to see.. The red arrows show the start and end point of plastic cover, and blue one shows the place TO BE OILED.
good luck
I checked the power steering fluid level, it is good, as this is still a brand new car.
should I be worried?
Thanks!
Tomas
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The problem is about the steering gear. NO NEED TO BE CHANGED. There is a rod btw the wheel and steering gear and a plastic cover to protect it from dust and water (not the axis).
Open it, you will see a rod under it and an O ring made of plastic surrounding it. GREASE IT. That's it..
I will put the picture for you to see.. The red arrows show the start and end point of plastic cover, and blue one shows the place TO BE OILED.
good luck
The pic you posted above is no longer valid - is there any chance you could upload the pic again?
I'm having the same squeak issue when turning wheel and would like to resolve - I have no idea how to access the area that you mention above.
Thanks
The pic you posted above is no longer valid - is there any chance you could upload the pic again?
I'm having the same squeak issue when turning wheel and would like to resolve - I have no idea how to access the area that you mention above.
Thanks
To reach that part, follow the rod from wheel to the steering gear, remove plastic accordion, then you will see that part. Spray with WD40 or equivalent, its over.
İ heard that injecting oil into accordion is another way of solving the problem without removing the parts...
I have same problem. Could someone post the explosion picture of that part which is needed to crease. Thank you.
Is that the same part (part 80) http://images.neoriginal.ru/index.ph...d3cd7f654b3351
Last edited by Tim911; Apr 4, 2014 at 02:51 PM.
I jacked up the front and turned the steering side to side whilst listening carefully with the engine idling - and found the sound coming from inside the car.
The plastic under-dash panel above the steering column had come adrift...possibly during the valet before it was delivered to me. 5 seconds later I pressed it into place and the problem is gone!!
To reach that part, follow the rod from wheel to the steering gear, remove plastic accordion, then you will see that part. Spray with WD40 or equivalent, its over.
İ heard that injecting oil into accordion is another way of solving the problem without removing the parts...
So recently I have noticed a dull rubbing/grinding noise from my 09 C350 (73K Miles) steering, catch is it only happens once in the morning and the car is fine after that, no noise. I have explained the issue to the dealer and they replaced the sway bars (not long after they replaced the caster arms as well), but the noise still happens every morning (it also feels like something could be loose). Looking for any possibilities, I have extended warranty till 100K miles. Thanks in advance.
I jacked up the front and turned the steering side to side whilst listening carefully with the engine idling - and found the sound coming from inside the car.
The plastic under-dash panel above the steering column had come adrift...possibly during the valet before it was delivered to me. 5 seconds later I pressed it into place and the problem is gone!!
The problem is about the steering gear. NO NEED TO BE CHANGED. There is a rod btw the wheel and steering gear and a plastic cover to protect it from dust and water (not the axis).
Open it, you will see a rod under it and an O ring made of plastic surrounding it. GREASE IT. That's it..
I will put the picture for you to see.. The red arrows show the start and end point of plastic cover, and blue one shows the place TO BE OILED.
good luck




