SL55/63/65/R230 AMG: ABC FRONT slammed to the ground fluid all gone
I have experienced the worst problem already and joined to hopefully make some new friends and help possibly to fix my car.
The situation is nothing happens when abc is hit. There is fluid all over the floor but the rear end is sitting high and the front slammed to the ground. The resovoir is empty and there doesn't seem to be an obvious leak near the block valve.
However under the front middle of the engine i can just about see fluid sitting there but can see from exactly where its coming.
I am very good with cars and stripping them etc so any ideas what and where the leak could be from. Also what should i do to temporarily raise the car.
Please help.
Thanks








Last edited by kittyandgary; Mar 16, 2015 at 04:28 PM.
My options is to get someone with Sds and refill the fluid and check if it pressurises. And if so check for leaks. Will also tell me if pump is dead.
But im guessing if the block valve has locked the rear suspension to the height it was set at before system failed. Then the vehicle was set at the highest position and the front has sagged down.
This must mean that the front block valve is not holding pressure or both front struts have gone. Most likely its the block valve though.
All in all i think it will cost me like £800 for a new pump. And then whatever has ruptured.
Hmm is it worth me thinking about coil over conversion? And will it allow me tp set the ride height low so that the car looks reasonably planted. I really do hate the gap between tyre and arch.
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The second time i had a line bust though it completely drained the system and burned out the abc pump in about 5 miles.
I just rebuilt my entire system right before the coil over system became available. If i ever have to do it over again i will swap it out for coils and ditch the abc altogether.
Last edited by coldhammer; Mar 17, 2015 at 12:35 AM.
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So i refilled the hydraulics fluid, and bingo, the car raised. But its pissed out the fluid i put in but i cant see from where. Looks to be from underside of the pump.
I also noticed when i toggled through ride heights. One rear side stayed slightly raised and wouldnt fullyy drop, it does however raise to the 2 lift settings, but will not go down to lowest setting. Its just one rear side.




What I would do is: clean up the mess, replace the part, flush the system, put in a new 3 micron filter, then tackle the back end.
Keep up the progress reports. Let us know if you need help.
My abc pump is leaking from one of its seals. Its the seal that goes all the way around the pump its self. I noticed the leak coming from where the main reservoir hose attaches to the pump ( right below this is the seal on the pump) its coming from there.
What are my options? Other than buying a new pump at a cost of £1000.
Surely a seal can be sorted?
Also my pump has a LUK sticker on it, is this original? Looks kind of new.
I noticed the electric connector on the right side of the pump, the connector on the car side was different to the pump side. It was just sitting on top without actually fully clipping on.
http://www.partsgeek.com/mparts/powe.../mercedes.html
Looking at about £500 $7-800 for the part.
Waiting for some good weather, and the weekend to tackle this job!

The most pumps installed by unskilled personel are being damaged before the car is lifted the first time.
For example the oil reservoir needs to be pressurised, before starting the engine the first time.
My advice: Get the install procedure from MB before you begin.
Cheers, Frank
Where can i get the procedure to pressurise abc system? After fitting new pump? And does it need de pressurising before removing pump.
Managed to source a pump.
Thanks
There is nothing special about this and can be done by anyone who knows which end is up on a screwdriver.
Pay attention to bullet 3 and 4 in the notes.
Last edited by sgaar; Mar 26, 2015 at 06:54 PM.
There is nothing special about this and can be done by anyone who knows which end is up on a screwdriver.
Pay attention to bullet 3 and 4 in the notes.
Lol phew... Removed some stressed off my head, i thought im screwed basically thinking id have to get car towed to a dealer after i fitted the pump. Thanks sgaar. i will read the pdf's now.
. Car in air (does it matter what setting suspension is on)
.make sure enough fluid in the reservoir
Bleed each strut through bleed valves?
Is this the bleeding process.
Thanks in advance, you guys are very helpful.
I have the banjo to remove, along with all the mounting bolts, and the pump should be out.
The power steering line bolt was a bstard!!! To remove. it kind of rounded off, i thought im fcked!!
managed to get it off using mole grips in the end. I almost gave up.Im scared the banjo will round off somehow with my luck

The weather is absolutely **** here, it was pissing down and very windy, didn't help the situation.


