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My car Is Whining

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Old 10-24-2011, 09:55 PM
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04 S55
My car Is Whining

It sounds like the feedback you get from a radio, except coming from the engine compartment, It just started happening last week never noticed it before then... Doesn't sound like a supercharger noise. but only sounds when in the gas not cruising and it's not power steering. Any ideas?
Old 10-24-2011, 10:19 PM
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2004 E55AMG RENNTECH STAGE 6,2005 SL65 AMG RENNTECH STAGE 3
needs accumulator for the abc suspension valve
Old 10-25-2011, 09:25 AM
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well i've looked around a bit seems pretty straight forward. any write ups do you know?
Does it have to come from MB dealer? or do you know somehwere else that sells them?
Old 10-25-2011, 05:18 PM
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2003 CL55 AMG
If it is your ABC accumulator, you will need an entire ABC fluid flush and fill using new filters.

When the accumulator lets go it releases millions if tiny pieces of the rubber diaphragm material into the fluid which as I am sure your aware can wreak havoc on the ABC valve blocks.

You can source accumulators after market at places such as Pelican Parts, etc. Google and you will find them.
Old 10-25-2011, 06:20 PM
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Ok so that answers that question.... don't drive the car. Any write ups on doing a flush? and yeah I was looking on google but the prices range a lot I didn't wanna put some cheap chinese junk in here so i can do it all over again in a month haha... so I guess I'll be looking into this
Old 10-25-2011, 07:54 PM
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2003 CL55 AMG
Originally Posted by s55kid
Ok so that answers that question.... don't drive the car. Any write ups on doing a flush? and yeah I was looking on google but the prices range a lot I didn't wanna put some cheap chinese junk in here so i can do it all over again in a month haha... so I guess I'll be looking into this
The accumulator should run in the $150 range. Mercedes uses Lemfoerder and Corteco as OE suppliers. OE part # is 220-327-01-15.

Generally you will need a DAS computer to preform the flush in order to Rodeo the car.
Old 10-25-2011, 08:36 PM
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S55kid, how many miles are on the car? Just want to be prepared myself when it comes.
Old 10-26-2011, 04:06 AM
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83,000. Does the Suspension oil have to come from a dealership or can you get it somehwere else?
Old 10-26-2011, 04:25 AM
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Originally Posted by awiner
The accumulator should run in the $150 range. Mercedes uses Lemfoerder and Corteco as OE suppliers. OE part # is 220-327-01-15.

Generally you will need a DAS computer to preform the flush in order to Rodeo the car.
So If I understand there is one for each side of the car? or is it front and rear? is it neither?
Old 10-26-2011, 07:55 AM
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Originally Posted by s55kid
83,000. Does the Suspension oil have to come from a dealership or can you get it somehwere else?
Get the fluid wherever is the cheapest, just make sure it is Pentosin CH11S...here is where I got mine: www.autohausaz.com
Youll need at least 10 liters.
Mike
Old 10-26-2011, 12:35 PM
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Originally Posted by s55kid
So If I understand there is one for each side of the car? or is it front and rear? is it neither?
There are two per vehicle. If your going to replace one you might as well do both so you don't have to go through this again anytime soon.
Old 10-26-2011, 01:25 PM
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ok so i drove the car today. and when i about a minute from home it said abc drive to workshop. When i pulled in the drive i noteced a wet spot... when parked the car i looked under it's dripping from everywhere on the drivers side
Old 10-26-2011, 08:59 PM
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Originally Posted by s55kid
ok so i drove the car today. and when i about a minute from home it said abc drive to workshop. When i pulled in the drive i noteced a wet spot... when parked the car i looked under it's dripping from everywhere on the drivers side
Let us know what you find, I hope it is not the pump, maybe it's the hose.
Mine is at 65K miles and know that this may happen to me one day.
There was a post on the w220 forum about a guy with an S600 that "almost" did his own work replacing the pump and where he got a remanufactured pump for about 699.00.
Are you going to do the work yourself? Thanks and hope things turn out!
Old 10-26-2011, 09:31 PM
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Originally Posted by wsy3benz
Let us know what you find, I hope it is not the pump, maybe it's the hose.
Mine is at 65K miles and know that this may happen to me one day.
There was a post on the w220 forum about a guy with an S600 that "almost" did his own work replacing the pump and where he got a remanufactured pump for about 699.00.
Are you going to do the work yourself? Thanks and hope things turn out!
Well I'll just say it like this... I have NEVER had a vehichle serviced by anyone but me... But I have NEVER had a Mercedes-Benz... so I'm gonna give it my best. but if it happens to where I am not able to.. like I hear bleeding the system has to be dealership done? then I don't have a choice, and that bothers me
Old 11-04-2011, 03:28 AM
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Here's one on eBay for $69... I don't know if I'd trust it though.

Looks like the part is $179.00 at the dealer and $128.40 on Parts.com
Old 11-04-2011, 03:30 AM
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Originally Posted by awiner
If it is your ABC accumulator, you will need an entire ABC fluid flush and fill using new filters.

When the accumulator lets go it releases millions if tiny pieces of the rubber diaphragm material into the fluid which as I am sure your aware can wreak havoc on the ABC valve blocks.

You can source accumulators after market at places such as Pelican Parts, etc. Google and you will find them.
In your experience, does a busted accumulator affect the ride quality? I noticed the response of my ABC seems a little bit rougher than it used to be and the car does make a new whining sound under acceleration.
Old 11-09-2011, 10:01 AM
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Originally Posted by Oxygen
In your experience, does a busted accumulator affect the ride quality? I noticed the response of my ABC seems a little bit rougher than it used to be and the car does make a new whining sound under acceleration.
I never noticed a difference in ride quality. Just the whining noise then the leak now it's in the garage. I'm about to go look some more today. Hopefully I can come up with something. Now the ABC light is on and the leak seems to have dissapeared... haha but hopefully I'll find it soon! I really wanna drive the car some more before winter comes
Old 06-25-2014, 05:41 PM
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2004 S600 (V220.176)
ABC ride more comfortable after pump change

I had a strong whine in the car, specifically when cold, and its pitch was rev-dependent. It was stronger up to 3000 revs and it was drowned out at higher revs. When revving up to 2500 revs and then taking the foot off the accelerator it even caused a vibration (reverb) somewhere. It went away completely when I was forced to replace the ABC pump (at €1850 incl. VAT - after a leak occurred) and the drive is now much quieter. I had earlier already replaced all pulleys and bearings.


Before the pump replacement there was no difference between the Comfort and Sport ABC setting (always in Sport setting). Now there is a difference as the suspension is softer when in Comfort. In the Sport setting it is as before.

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