Body acceleration sensor, location - GF32.31-P-4100-01SL

Model 230 

Fig 1: Identifying Front Left Body Acceleration Sensor

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Front Right Body Acceleration Sensor

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Rear Left Body Acceleration Sensor

Courtesy of MERCEDES-BENZ USA