M56 - Power Steering Pump Noise

[adeedpb]

Does anyone else with a M56 experience noisy/groaning power steering pump when the car warms up?

I can hear it in the car with the windows up when I make a turn; I know the pumps usually naturally groan but this seems a little more prominent than it should be.

*I did check fluid levels and the fluid is fairly clean and does not smell burnt.

[Ilya]

I have a groan but I think it's something else. Lasts about 10 seconds and then I never hear it again.

[adeedpb]

Mine is definitely the power steering pump, I know the sound all too well from steering problem adventures with my super high quality Hyundai designed for small hands.

[adeedpb]

*Update

When I was at the dealer getting an oil change I brought this up to the service manager. The problem was the screen in the power steering pump reservoir was clogging up. They replaced the reservoir and the noise is gone.

[ibc]

Interesting. I have that noise too. It goes away within a minute, but it's annoying.
Funny that page ST-87 of the FSM doesn't mention any screen. It must be part of the reservoir itself, and not separately replaceable. I wonder if the screen can be cleared by blowing it out with a blast of air?

[adeedpb]

It is part of the reservoir... I had a similar issue with another vehicle and I cleaned (tried to) out the reservoir myself; it fixed it temporarily and then started making noise again. It was only permanently repaired by replacing the reservoir.