well as you may have seen, bmw's are available with active roll stabilization (ARL).
i never knew that the system actually leans the car. i thought it just locked the stabilizer bar.
it's a neat system.




what i thought was a steering noise that i have, turns out to be the ARL.
the ARL runs off the power steering pump. the noise i had occured only when i was in motion, and turning. the noise comes from the passenger side floor, since the control for the ARL is right underneath there.

even though the noise is very slight, i want to figure out how to fix it. i am going to flush the system and add some lubrizol, which some others have done before.

anyone else have any experience with the ARL system?

 

yup loved ars. I don't recall being able to hear mine work.

 

yeah, i can hear the the control valve on mine, since it is bolted right beneath the passenger floor board. it seems like a bad place to mount the unit, since noise can transmit easily into the car, since bmw says its normal.

 

haven't heard it making noises as well

 

I'm on the verge of buying a car which has dynamic drive (Active Roll Stabilisation) so I will be able to let you know in a week or two time. However, I never heard it on the test drive or previous vehicles that I've test driven which also had dynamic drive.

 

the lubrizol addittive part number is 83290447661

 

I definitely hear mine and the intensity is consistent with the speed and steering angle. It seems normal to me.