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.
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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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