Active Lane Keeping Assist, block diagram - GF54.71-P-0004-02LE

MODEL 216.3 with CODE (238) Active Lane Keeping Assist as of Model Year 2011 /AEJ 10 MOPF 

MODEL 221.0 /1 (except 221.095 /195) with CODE (238) Active Lane Keeping Assist as of Model Year 2011 /AEJ 10 

Fig 1: Active Lane Keeping Assist - Block Diagram

Courtesy of MERCEDES-BENZ USA