Loss of Power Steering Due to Leaking Steering Rack on Mercedes-Benz ML350

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.

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Average mileage: 80,843 (31,500–200,000)
10 model years affected: 2003, 2004, 2005, 2006, more2007, 2008, 2009, 2010, 2011, 2012
114 people reported this problem
58 people shared problem details
My 2008 ML350 has developed a very tight steering issue, especially when stopped or moving slowly. The driver can feel flat spots when trying to turn the wheel and the wheel is very difficult to turn. After a decent amount of driving time, it seems to ease up, but for shorter commutes the hard steering lasts the entire time. Power steering fluid has been topped off but wasn't noticeably low when checked. This is a safty concern and it worries me that Mercedes is aware of this, due to the number of customer complaints, and has done nothing about this. Many of these vehicles are driven by females, namely mothers with children, and this problem should be looked into and a permanent repair should come from Mercedes.
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Had to replace the power steering at 59000 miles. Just learned that there was a recall. I was never notified of this by the dealer since I did not own the vehicle when I they sent out notices. So aggravated and seeking recourse.
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I can't believe it. I just paid off my car and now I have to deal with expensive repairs. This is my 2nd Mercedes. I will never buy another one again.
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Noticed leakage on garage floor. Placed drip pan underneath and determined that leakage was power steering fluid. Took to dealer (7th MB, always take to dealer-better results). Dealer said probably steering rack. Options: 1) replace rack, ~$3,000 or 2) install "seal replacement kit", ~1,500. Plan to keep vehicle as has been bulletproof till now. Mech found leak where P/S fluid reservoir attaches to pump and resealed it. Brought home, cleaned garage floor and parked truck. Next day noticed more leakage. Back to dealer. Now mech finds leak at the input shaft on the steering rack, same options. Upon questioning mech says the dealer (small dealership) has done this replacement (option 2) several times and has had no come-back on it so I went with that. Job is labor intensive in that to remove steering rack, the front differential and a support member have to be removed and replaced. Obvious MB knows of this issue but haven't been able to find any MB tech bulletin on it.
My car has been leaking power steering fluid since about 110,000 miles. I now constantly replace the fluid on a regular basis rather than paying the $1500 repair cost.
Just learned that my steering rack is leaking and needs to be replaced. $1500 for the parts plus $600 labor. Called Mercedes, they told me there is no recall on that.
Power steering leak replaced the unit holding fluid starting to leak 50,000 miles later or 2 years.
ML350 made winding sound when putting vehicle in motion. Sound would go away as vehicle sped up, but would return when slowing down at lights or to make turns. Discovered small leak of power steering fluid. First look it appears from the hose and not reservoir.
I heard a loud noise when I was trying to steer, I took it to a local shop and said all the power steering liquid had leaked out. Took it to the dealer and said the power steering seals needed to be replaced.
Leaking power steering rack. Needed replacement
Leak on power steering wheel.
Not fixed as of yet. Very aggravating.
Power steering wheel is not working
Power steering rack and pump leaking , loss of steering. need to replace entire steering system
The car was making loud noises. Took it to my mechanic and he said the steering rack is leaking and it will cost me $2,000 to fix it.
power steering fluid leak
Noticed after a month purchase My power steering was low and the steering wheel made screeching sounds and the car started idleing high. Checked the reservoir and it was empty mechanic replaced the fluid and approximately two weeks later the steering wheel was screeching again
Power steering pump failed due to added pressure from leaky/failed steering rack. Replaced rack & pump....expensive!
At 60,000 mil and 67,000 mil Replace seals in spring of two consecutive years after a bad winter. The following year, after a long trip, heard crunch sound and low power steering fluid. (Power steering pump had to be replace and had a loose tie rod.) They said that eventually I need to replace the power steering rack. (Too expensive at the time ) A Slow leak was found (Just Check over time and top off power steering fluid as needed). After that year, Hear crunch sound again. and Finally I'm going to have to (Shell out about $2,900.00) to have it fixed) It is a little more expensive than some Mercedes dealership but they make sure it is done right I won't have any problems in the future with their work.
Tough to steer when breaks have been applied, very hard to maneuver. Giving it gas makes it release a bit but it's very dangerous. Looking for solution, not notified by pre-owned dealer of the issue. Mechanics have not been able to identify the problem, just told me to find out if there was a recall on my vehicle. Purchased in Santa Clara, Ca. I've since moved.
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