Loss of Power Steering Due to Leaking Steering Rack on Mercedes-Benz ML500

Problem Description and Possible Solution

It is not uncommon for the power steering rack to develop a fluid leak requiring replacement of the rack assembly. Loss of power steering fluid may also cause an abnormal noise and damage to the power steering pump.

Problem Data
RepairPal Verified
Average mileage: 85,612 (32,500–120,000)
5 model years affected: 2002, 2003, 2004, 2005, more2006
23 people reported this problem
Viewing 1 - 10 of 10 comments
Lost power steering and have a loud noise. Looking for a repair shop still.
i am on my second rack in 2 years! way to go mercedes benz
power steering leaks and noisy
V. Torio

Power steering rack leaking all over creation.

This leak caused the power steering pump to burn up, as the leak was hard to locate. The mechanic noticed the rack leaking fluid after the pump was replaced.

Total price: $2000

I chose a rebuilt rack and a rebuilt power steering pump.

I'm disappointed as hell in this major and costly malfunction for such a basic item.
Steering rake replaced when the warranty was expired 2 mounts. I ask the dealership to check for any oil leaks before the warranty expired. On the work order it says no leaks and I show them work order. Rake steering was about $4000 and they said that they will give me part for free but I need to pay the labor and that was $700
Steering rake replaced with only 50,000 miles on it I'm original owner.
vehicle has lost 85-90 percent of hydraulic assisting power.
Not sure yet where the leak was found as my vehicle is STILL at the dealership! I have had to replace the power steering pump, reservoir, belt, pulleys, rack and pinion...so far! GEEZZZ!!!!
power steering fluid leaking