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Hello everybody. My dad has a serious issue with his CL600 V12 Biturbo. Car is lovely to drive to but last time one of the hydraulic pipes of the ABC burst. We have got new pipes, mechanic put new oil to it and now car is not straight. I have run Rodeo on it plus two other tests like Pitch and Roll, after that car is straight but when I set gear selector to Drive car is going back to its previous stage, right side is lowered. We have look at the links for the level sensors in front and it looks they have to be replaced, we have straighten them a bit and right front is a bit higher now. There is one error on ABC which says that Level Callibration has not been succesfully done. I was trying to level up the car but once I will reach the screen to input angles it says that "Value is not within the range" Any help would be appreciated.
 

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CL 600 - Model year 2002
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I am so very grateful for your wise advice and I will listen clearly to it and go to the garage tomorrow.

But my CL 600 year 2002 seems to intermitently give me the ABC warning. Mostly the grey 1st dashboard warning regularly and rarely the red warning. But the red warning ABC Light does come on. There is no consistency. I was driving the car all day today and NO red warning but many grey (1st ) warnings on the dash.

Is there anything I can do in the meantime before going to a mechanic? I am mostly completely ignorant of anything techinical but terrified as London garages charge a fortune and you often cannot get a straight answer.

Is it just wishful thinking on my part that this is just an intermitent issue? I hear from many that sensors on the CL600 are too sensitive or am I just wishing/praying and justifying this ABC issue....?

I could not possibly be more grateful to anyone that could help. I thank you in advance.

Best wishes,

Giles
 

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Discussion Starter · #104 ·
Giles, to add to what you may have learned from the other thread, it's very likely that you have a system leak and/or pump malfunction. With a car as old as yours, unless the entire system has been renewed, issues like what you're describing are pretty typical. In fact they usually come up long before 14 years! Struts may well be leaking, and as you say the system is sensitive enough to throw error messages (often erratically at first) when pressure variations are noted.

How do your fluid color and level look? When you park the car, are you noticing leaks on your garage floor? If so, where? How many of the links in post #2 of this thread have you read? There's a lot to learn if you're so inclined...
 

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2001 CL55
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41 Posts
These ABC Threads are not collected here because every post within them is gold. They're just a basic step in organizing the information. Comments (and contributions) are more than welcome. Also check out the ABC notes in the R230 Forum, many (but not all) of which apply to our cars as well.
Here is a valve block reseal procedure. The guy is pretty good at what he does.

http://www.benzworld.org/forums/c21...t.html#/forumsite/20548/topics/2710449?page=1
 

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2001 ML320 2004 ML500 2011 E350 2015 ML350 2002 CL55 AMG
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859 Posts
These ABC Threads are not collected here because every post within them is gold. They're just a basic step in organizing the information. Comments (and contributions) are more than welcome. Also check out the ABC notes in the R230 Forum, many (but not all) of which apply to our cars as well.
Here is a valve block reseal procedure. The guy is pretty good at what he does.

http://www.benzworld.org/forums/c21...t.html#/forumsite/20548/topics/2710449?page=1
I clicked on this and was directed to a discussion of speakers and audio.....
 

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CL600 year 2001
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255 Posts
Both front corners are saying, they don't sag to car too low in one day, but when I start the car the front jumps up massively
If it goes downwards when standing there, it should jump up as soon as you start the car - and maybe even faster in case, you touch the level button on dashboard. That is normal - that it "jumps" up..

But - if all is OK, it will not sag (go down) when standing. My CL 600 keeps it level at least a couple of months, that I have seen it now after the repair work I did for ABC.

Your car has leak on both front sides; it means that the both locking valves are leaking. That means that on the attached picture, the RED and YELLOW solenoids have O-rings leaking. You have to take them out and change the O-rings.

You can get good introduction from the link: https://www.abcspecialist.nl/uploads/documents/active_body_control_uk_2019_watermark.pdf#page=32

This video gives you good avises how to do it.

To open the solenoids, you should not raise the ABC system to the upmost height, but leave it to the 1st level. Then you have to lift the tyres from the ground and use jack stands to set the stable location for the car. Don't start the car that way. Start it only when the tyres are on ground. Pls note that if you have pressure inside the pipes, it will blow the solenoid out uncontrollable way - and you will get the hydraulic oil into your eyes!

You may get the solenoids out from the block even when the block is still in the car - not on the table, as seen on the video.

Change the oil and the filter. Work with white gloves - use clean tools!

Product Camera lens Camera Lens Film camera
 

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CL600 year 2001
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One red light to lid is OK. NOT THE UPMOST level.

Did you change the oil and filter?

Dirty oil will wear the aluminum block and solenoid's hole - causing internal leaking oassing the O-rings. Have a look, if you can see that happened.
 

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CL600 year 2001
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255 Posts
Pls have a clear look into the block's holes. I took even photos and could clearly see the wearing inside. And finally after several O-ring replacement trials, I had to replace the aluminum valve blocks; and got all fixed with that only.
 

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CL600 '00 5.8L V12
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Pls have a clear look into the block's holes. I took even photos and could clearly see the wearing inside. And finally after several O-ring replacement trials, I had to replace the aluminum valve blocks; and got all fixed with that only.
Sorry for asking again, I thought you might have missed my reply

Could you send some of the pictures you have of your worned down valve block?
 
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