Supersedes Technical Service Bulletin Group 40 number 11-18 dated July 14, 2011. When a control arm or wheel bearing housing (swivel bearing) is replaced, additional parts must be replaced due to a supersession of service parts. Due to further technical development, new design control arms were implemented during 2011 production. Control arms and axle joint journals with diameter M14 (previously M12) are now fitted to all production vehicles.