MykhailoM

Hi,

On reverse parking turning steering wheel close to maximum I heard squealing high pitch noise. Next day, going slowly in town around a corner and suddenly the steering wheel became stiff and hard to turn. finally found someone to install the steering pump.

So far I have changed;

1. Hydraulic pump ( MEYLE )
2. Steering Proportioning Valve (BOSCH) - Solenoid that seat between steering rack and column. (thinking it may be the second part failure).

And still on stationary / idle or very low speed the steering wheel turns are way too stiff - really hard to turn left or right. At speed or engine raves it feels almost alright but still somehow firm steering. ( Not as it used to be before the pump failure)

Would someone have an idea as to how it can fixed ? or what to check may be a FUSE some hidden place, I have checked high & low and cannot find as to what may cause it. I have scanned with MP iCarsoft (V2.10) scanner -still no success. Could it be power steering tank filter clogged ( if there is one ) that doesn't allow fluid circulation !?

Mercedes CLS 350 CDI ( 2010 model diesel)
VIN: WDD2193222A169248

Thanks a LOT !
Mykhailo

nd-photo.nl

The filter is in the reservoir and is not serviceable. In other words, to service the filter you need to replace the reservoir. I would start there and do the bleeding with turning the steering wheel side to side (with wheels from the ground and engine off obviously).

Pictures: https://mbworld.org/forums/c219/8443...ml#post8597467

I used the Febi Bilstein 06161 which is the correct CHF11S fluid

I am curious if the steering is also hard with wheels from the ground (without engine running)