abc
#2
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Join Date: Oct 2005
Location: Northern NJ
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E90 N54 & W251
With a normal shock, that return pressure when you hit a pot hole is pretty much contained to one wheel well. With a hydraulic suspension like ABC, some of that pressure goes back into the system which burdens the hoses.
I say drive and don't worry.
Here's a great summary of ABC on Wikipedia:
http://en.wikipedia.org/wiki/Active_Body_Control
#4
Senior Member
Thread Starter
when do you change the oil and filter from ABC pump
flush out the system
dealer charge me 650 out the door
that they put your car on the horse back ride
flush out the system
dealer charge me 650 out the door
that they put your car on the horse back ride
#5
wow thats a lot, I think they charged me about $100. I will do it when they oil gets dirty, maybe every 60K along with the transmission fluid
#6
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E90 N54 & W251
Actually the new procedure is to filter instead of flush, which is using the same fluid but cleaning it. This is done by installing a new 3 micron ABC filter, running the rodeo program in SDS twice and then replacing the filter again. This ensures that all of the fluid in the system traverses the new filter and gets clean.