Power steering

[Dave54]

Hi
Not long had my 2003 mercedes Cdi auto and now the power steering has packed up. I have checked the fluid and that is fine.
Can anyone point me in the right direction.
Also I have no warning lights on my dash.

 

[Uncle Benz]

I’d suspect pump failure, but it isn’t a straightforward diagnosis. Get someone to turn the steering with the engine running while you look in the top of the reservoir for fluid movement

 

[Dave54]

Cheers for the info

 

[joderest]

unlike most, its quite a simple system, pump driven by belt, which powers the rack.
Have you got any drastic oil leaks ?

 

[Dave54]

unlike most, its quite a simple system, pump driven by belt, which powers the rack.
Have you got any drastic oil leaks ?

I found pipe off so all fluid drained out but now the pump is making an extremely loud noise

 

[joderest]

If the pump ran dry, it may well need replacing. I expect you topped up fluid after finding the leak, if so, and pump makes a lot of noise, then that would confirm. ( did you bleed system, turning steering from lock to lock to get air out)
Pretty straight forward, swap pump and bleed system

 

[ajlsl600]

Either cavitating due to air or pump goosed.. if you change pump.be careful to check for debris in rack ..flush the system