One problem related to power steering pump has been reported for the 2003 Mercedes Benz ML320. The most recently reported issues are listed below.
I had taken my mercedes Ml320 in for recall work #2003040005 at motor works in hoffman estates IL. For power steering pump recall and they wanted to charge me approx. $6,000. 00 for this service which should be free. I've tried to contact mercedes and motor works with no response the clamps that connect the power steering hoses come off quite often resulting in loss of control, I guess I shouldn't expect much for a $40,000. 00 car!!.