S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

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Old Apr 20, 2023 | 10:59 AM
  #26  
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I had the same hose pop on my s600. I had the check light and the rear suspension defaulted to the top position. I took out the valve block and tested the solenoids, and one was bad, so I am waiting on a new one. Can anyone tell me the PN for the hose that goes to the rear accumulator? I can't find it anywhere, but I don't think I know what it is called. Also, are the hoses different for sedans and coupes?
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Old Apr 20, 2023 | 08:34 PM
  #27  
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2005 S500 Designo
Originally Posted by edognight
I had the same hose pop on my s600. I had the check light and the rear suspension defaulted to the top position. I took out the valve block and tested the solenoids, and one was bad, so I am waiting on a new one. Can anyone tell me the PN for the hose that goes to the rear accumulator? I can't find it anywhere, but I don't think I know what it is called. Also, are the hoses different for sedans and coupes?
Call a Mercedes Dealership, ask for Parts, describe what you need, and have them order you the hose (Those are MB Genuine only). You can get away with Corteco accumulators (Mercedes OEM manufacturer) and save a few bucks.
My recommendation: Before ordering parts, and while the system is completely drained, inspect any and all ABC lines/components for any sign of leakage or problems. If one of your accumulators blew up of its own accord, replace all of them (only one you can get away with not replacing maybe is the one on the rear valve block as its a return accumulator/regulator). Make a list of items, then order form a dealership (except maybe the Corteco accumulators). You're going in deep, and now is a good opportunity to replace the little things (like rubber spacers, washers, etc.)
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Old Apr 20, 2023 | 08:35 PM
  #28  
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FYI and FWIW, see this post for choosing a dealership to order from. Remember, cheapest isn't always best, proximity and quality of employees also plays a role.
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Old Apr 21, 2023 | 10:19 AM
  #29  
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Thanks for the advice, I will do that. I am now waiting on an e18 external torx for the rear sub frame, to drop it, and take a good look at things.
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Old Apr 21, 2023 | 02:17 PM
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Standard twelve-point sockets or wrenches will often fit the e-torx fasteners. Make sure that you have a good fit before putting a lot of torque on the wrench.
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Old Apr 21, 2023 | 11:28 PM
  #31  
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2005 S500 Designo
Originally Posted by edognight
Thanks for the advice, I will do that. I am now waiting on an e18 external torx for the rear sub frame, to drop it, and take a good look at things.
I had to run to home depot, the Husky set is actually quite nice.

I completely removed the subframe bolts, and let it just hang there (at first I supported it on a jack, then found that superfluous. Fishing the line out is a PITA, but Mercedes book time for this job is only like 5 hours or so. I didn't do it in 5 hours.
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Old Feb 21, 2024 | 03:45 PM
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2005 S500 Designo
Originally Posted by edognight
I had the same hose pop on my s600. I had the check light and the rear suspension defaulted to the top position. I took out the valve block and tested the solenoids, and one was bad, so I am waiting on a new one. Can anyone tell me the PN for the hose that goes to the rear accumulator? I can't find it anywhere, but I don't think I know what it is called. Also, are the hoses different for sedans and coupes?
How did you test the solenoids and find out one of them might be bad?
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Old Feb 21, 2024 | 04:13 PM
  #33  
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I pulled out the valve block and jumped the circuits with a battery. Some clicked when jumped, and one did not.
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Old Feb 21, 2024 | 05:11 PM
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Originally Posted by edognight
I pulled out the valve block and jumped the circuits with a battery. Some clicked when jumped, and one did not.
Interesting. I would expect the car to behave in all sorts of weird ways if a solenoid weren't clicking.
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