ABC Problems
Thread Starter
Newbie
Joined: Jun 2008
Posts: 13
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2002 cl600
ABC Problems
When driving I will get a Gray "visit workshop" message on dash..ride height is normal while driving. As soon as the car is turned off the Left rear suspension starts dropping. It will drop all the way till the point were its almost touching the wheel well all of this happens within a matter of 5-7 minutes after being off. Do you think its the rear valve block or an individual valve for the LR side
MBworld Guru
Joined: May 2006
Posts: 2,345
Likes: 10
From: Irvine
04 CL55, 05 E500S4, 15 BMW i3 REx
I would guess valve block. The individual valves cannot be ordered separately, so unfortunately it seems the entire block needs to be replaced. The car running is probably building enough pressure to keep that corner up when you're driving and as soon as the car is turned off, that corner can't hold the pressure. It's silly because it's probably a $.25 o-ring that went kaput.
Member
Joined: Dec 2009
Posts: 192
Likes: 4
From: Western New York, USA
2004 CL500
I would guess valve block. The individual valves cannot be ordered separately, so unfortunately it seems the entire block needs to be replaced. The car running is probably building enough pressure to keep that corner up when you're driving and as soon as the car is turned off, that corner can't hold the pressure. It's silly because it's probably a $.25 o-ring that went kaput.
MBworld Guru
Joined: May 2006
Posts: 2,345
Likes: 10
From: Irvine
04 CL55, 05 E500S4, 15 BMW i3 REx
Well, given my experience with hydraulics previous to this car, I would consider it to be an "inner-dump seal" or valve seal. Does the exact same thing mentioned above. If you're a handy person, I'd recommend removing the block, thoroughly checking that valve, and finding a replacement seal. Could save you $1000 plus.
Thread Starter
Newbie
Joined: Jun 2008
Posts: 13
Likes: 0
2002 cl600
Do you think it may also be dirt within the lines that is stick on the block? I'll see of I can find those individual seals. The guy I bought it from says that some sort of silicone sealant got into the abc system somehow ( I don't know why). Says he did a flush but I doubt he performed a rodeo.. Is a flush worth doing or do you think I should go ahead and replace the block as well? Thanks again
