i have a c230 coupe 2002 yesterday I replace my front control arm after i replace iti loose my aligment but that is nut the proble i drove home with no problem then today in the morning i was driving normal the the esp light went on and now it dosent go off and i have that anoing malfunction message in the dash bord ut I tested the esp and it does work

regards

 

perhaps you shouldnt have done replacing it yourself. check if replacement affects other parts.

 

nop nothing electric realeted with the control arm

 

yea, but uhm, there's this weird thing that happens esp. when replacing parts incorrectly. if you're sure that what you did is appropriate, then there must be something wrong with parts affective esp lights itself. if that troubles you, you may need some help with a technician to further specify the real problem.

 

My first thought would be to double check the ABS/ESP sensor connection at the wheel by the LCA you worked on.

 

check everithing, is ok