abc /-active body control problem on 2001 Mercedes-Benz S55 AMG

my abc light came on..-car is stuck on lowered position and will not move up or down..-i have changed fluid/filter flush..-right front strut stuck on high position..ran code= b411 bad right front sensor..-no leaks..-do i have to change strut or is there something else that might cause it to be like that..??-valve/pump/etc..-??-please let me know..thanks..-

by in Fremont, CA on May 18, 2010
2 answers
ANSWER by on May 19, 2010
Check any electrical sensor, connection, or wires that lead to the ABC from strut tower, fender well, or under the vehical.
ANSWER by on May 26, 2010
defective valve. my s-55 did the same thing and after taking it to the dealership 3-4 times they finally got it right.
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