SBC control unit, location/task/function - GF42.46-P-4500SL

MODEL 211 up to 31.5.06 except CODE (494) USA version except CODE (498) Japan version 

MODEL 211 up to 30.6.06 with CODE (494) USA version with CODE (498) Japan version 

MODEL 230 up to Model Year 8 

Fig 1: Identifying High-Pressure Charging Pump And SBC Control Unit

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.