Squeaking Noise when turning steering wheel

Squeaking Noise when turning steering wheel

Ive had a quick search of the forum for this problem and what I found confirmed what the garage told me;

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 the pressure relief valves shreak in the PS it is due to fluid aeration. Check fluid level. These cars are very critical on level. Reservoir is under RHS air inlet tube — pull tube off to access. Top up — turn steering from lock the lock 5 times to bleed/prime & check level again. Top up as necessary.

Observe temp & level on cap dipstick.

Thanks Glyn M Ruck — I had a look at the level and its at Max for 20 Degrees. Temperature outside when I did it was 10 Degrees.

Any other ideas?

Thanks Glyn M Ruck — I had a look at the level and its at Max for 20 Degrees. Temperature outside when I did it was 10 Degrees.

Any other ideas?

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.

I am having a similar but different issue, my car is a 2011 C250, has 11,000 KMs on it, the symptom was while the steering wheel was turned over 90 degrees at low speed, there was a noise sounds like from a antler horn (that the best I can describe it) last for just a second, then gone. nothing changed on the steering feeling though, it happened only three times in two years,

I checked the power steering fluid level, it is good, as this is still a brand new car.

should I be worried?

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.

Sorry to drag up an old thread but i’m having the same issue.

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.

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