CL55 AMG, CL65 AMG, CL63 AMG (C215, C216) 2000 - 2014 (Two Generations)

ABC Pump Replacement & Hydraulic Line Upgrade (With pictures!)

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Old 06-11-2012, 09:02 PM
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I can't get pics to load either...bummer..........looks like this thread has been going for a few years. EVERY time I read any ABC issues, I start to cringe....knowing that that will be me one of these days.....seems like with all the failures MB should do something to upgrade these systems. Do guys with the newer models (2010+) have these same issues?
Old 06-11-2012, 11:10 PM
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Originally Posted by red60R
I can't get pics to load either...bummer..........looks like this thread has been going for a few years. EVERY time I read any ABC issues, I start to cringe....knowing that that will be me one of these days.....seems like with all the failures MB should do something to upgrade these systems. Do guys with the newer models (2010+) have these same issues?
Yes, I believe the 2010+ models will have the same failures. Just a matter of time before the hoses start failing. Once that happens, it starts the chain reaction and slowly but surely wipes out other components.
Old 12-11-2017, 06:19 PM
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I guess this thread is dead now? I have a 2009 S63 that I think is having ABC pump noise. As of now, there doesn't seem to be any symptoms beyond the power steering type noise, but it does change sound when the suspension has a significant motion. Actually when the car is first started, it doesn't make the noise until you start driving it for a minute. After a minute or two of driving, or the first bump, it will start making the noise. The suspension itself seems to be just fine, doesn't drop down or anything and I don't think its leaking. Is there anything it could possibly be other than the pump going bad? I hate to spend over 3 grand if I don't need to. Also does anyone know where the pictures in the beginning of the thread went? I would like to see them. Thanks!
Old 12-11-2017, 07:08 PM
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[maybe just clogged filter? What type of noise? Bearings?


Originally Posted by Pbrill
I guess this thread is dead now? I have a 2009 S63 that I think is having ABC pump noise. As of now, there doesn't seem to be any symptoms beyond the power steering type noise, but it does change sound when the suspension has a significant motion. Actually when the car is first started, it doesn't make the noise until you start driving it for a minute. After a minute or two of driving, or the first bump, it will start making the noise. The suspension itself seems to be just fine, doesn't drop down or anything and I don't think its leaking. Is there anything it could possibly be other than the pump going bad? I hate to spend over 3 grand if I don't need to. Also does anyone know where the pictures in the beginning of the thread went? I would like to see them. Thanks!
Old 12-12-2017, 01:47 PM
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Originally Posted by MikeKanterakis
[maybe just clogged filter? What type of noise? Bearings?



Kind of like a loud hum. Like a power steering pump that went dry.
Old 12-12-2017, 01:54 PM
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The gaskets failed on mine before the motor went bad. Filters are pretty cheap. It might be a good place to start. When was the fluid changed last?


Originally Posted by Pbrill
Kind of like a loud hum. Like a power steering pump that went dry.
Old 10-26-2018, 09:03 AM
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Update, it ended up being a bad damper on the driver front side closest to the pump.
Old 01-03-2019, 07:14 PM
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Bad Damper?

Originally Posted by Pbrill
Update, it ended up being a bad damper on the driver front side closest to the pump.
Pbrill, my 09 E63 just started making a humming noise as well. Car drives fine and suspension is fine otherwise. Do you have a picture of the damper that failed? Thanks

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