Power Steering leak fix? - MBWorld.org Forums

Dec 17, 2015 | 10:27 AM

refresher72

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Junior Member

Joined: Apr 2010

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2016 GL450

Power Steering leak fix?

My 2008 gl450 has a leak from the steering rack... Mechanic says need to replace the rack and pinion assembly. Please advise if that is the only option or replacing the power steering hose O rings wld do it? How many hrs of labor it takes to replace rack and pinion? Any recommendations on remanufactured rack and pinion? Which is beteer aftermarket r&p MasterPro (O'reilly) A1Cardone(Advanced auto)?

Please review the uploaded leak pics for reference

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Dec 17, 2015 | 01:48 PM

BlownV8

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Joined: Aug 2003

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From: In my garage

E55, GLS450, GL63, GLE350

Make sure it is not coming from the power steering reservoir since they are known to leak.

Dec 24, 2015 | 01:10 PM

racebmwm3

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Joined: Dec 2015

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2010 GL450

Leak looks like it is coming from up high. I would take a look up top and examine the reservoir/hoses before replacing the rack.

That said, my rack is leaking slightly (not as bad as yours) but it definitely seems like it is coming from the left seal.

Dec 26, 2015 | 09:34 AM

mike278

Junior Member

Joined: Jun 2015

Posts: 46

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2011 GL450

Not going to swear to it, but I believe there was a TSB to replace the hard lines and o-rings on the racks of some MBs. Might save a few bucks over a whole rack.

Dec 26, 2015 | 09:48 AM

joshd2012

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Joined: Jul 2014

Posts: 52

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2008 GL320 CDI

I had the same issue and MB recommend the same thing - replace the rack. Fortunately, I had it covered under extended warranty. IIRC, it was five hours of labor and they also shook me down for an alignment.

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