Steering angle sensor, location - GF42.45-P-4600-03GB

Model 463 as of 1.9.01 up to 30.6.02 

Fig 1: Identifying Steering Angle Sensor

Courtesy of MERCEDES-BENZ USA

MODEL 463 as of 1.7.02 

Fig 2: Identifying Steering Angle Sensor

Courtesy of MERCEDES-BENZ USA