power steering fluid leak

I found out today that I have a leaky reservoir. The dealer is telling me that the original reservoir on the 2006 ML350 was discontinued and that the new reservoir doesn't match up with the power steering pump. So I need to replace my power steering pump. Does that make sense? Did Mercedes really change to another reservoir that doesn't fit with other parts already installed?

I have replaced quite few O rings - they were ALL leaking - but never see a bad or cracked reservoir. I don't even use the original O ring, but a slightly thicker one and non of the ones I repaired is leaking. If MB makes a change on a bad part, they will be sure it will fit. I think your MB dealer is not honest. You can ask a printed Technical Service Bulletin about the Power Steering Reservoir and Pump update. I didn't find any. There are few other TSB on the steering - non for the reservoir-pump replacement - and one recall on the clamp which secures the pressure hose to the cooler, but that's it. The truth is, I get the manufacturer's TSBs with few months of delay, but you can ask them about the parts upgrade - if there is any, they should have the documentation from the factory. I'd suggest to find a honest, reputable independent MB specialty shop in your area and get a second opinion. Let us know what happened. Zee

Thanks Zee. I sure will.