Hi T_Money, thanks for the reply. No, I don't get the impression that it's the steering pump: You are right, I have the steering turned at the point that I hear it, but I don't think I am at full lockas the road is reasonably wide and I tend to reverse into the left hand lane, not requiring a very sharp turn. Its also almost like a fixed duration every time, not dependant on how fast or long I drive out, turning the wheel. When I saw your post, I jumped into it, started it and turned the steering full lock to both sides, going forward and back about a meter each time, with the car level - I just heer the TSSSSSHHHH sound when I get to full lock, not that servo type sound. That sound is heard when the front wheels goes into the curb, the rear wheels slightly higher up on the tar. If you are familiar with the sound of an outboard motor on a boat being lowered - it almost sounds like that but not as high-pitched. It does not worry me, I am just very curious of what it is.