CL-Class (W215) 2000-2006: CL 500, CL 600

03 cl600 abc internal leak?

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Old Oct 2, 2021 | 05:01 PM
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C215 CL 600 2003
03 cl600 abc internal leak?

Hi guys

Im from Europe so pardon my english.

First, I have read all threads with ABC issues and am not confident in the answers as my issue is a bit different. White ABC visit workshop comes on occasionally(about once in every 3 weeks in general), but not when driving over bumps but totally random.
I have noticed it comes on more often when weather is hot, but might be a coincidence, but looks like it might be so. It almost always come on if car stands idling for 20 mins.
No leak under car what so ever and reservoar perfect in level and no overflow. The issue is that car gets lower in right rear when car stands for a day or two. Sometimes it holds up a little better(up to a week), but it rarely goes as low as to red light "car to low". Only when car stands a long time or rarely more often(maybe 2 times a year when only stand for a week). With car on and gear in place car always rise in level. Its hard to say, but maybe level in right rear is a little lower even when engine on, but almost not noticible in that case.
This is not a big problem for me so Im not taking it to a dealer before it becomes a big problem(have not been worse in 2 years). Sometimes I can drive over a month or two with no warnings so this is not a big issue, but I want to know what causes the issue. My guess is valve block, but I might be totally wrong. Can someone analyze my findings and maybe come up with a diagnosis? I have no Star diagnosis. Best regards!
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Old Oct 3, 2021 | 09:52 PM
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2002 Cl500
Valve block for the sagging….white abc warning can be many things….ride height sensors voltage could be reading high or low…..acceleration sensors…bla bla bla….definitely should invest in a code reader….they have very cheap options now a days….icarsoft seems like a decent option….uses your phones Bluetooth capabilities and syncs wirelessly via the obd port on the vehicle
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