Steering angle sensor, position - GF42.45-P-4600-03C
WARNING: This page is about a different car, the 2009 Mercedes-Benz E550 and 2008 Mercedes-Benz E550. However, it is still accessible from the selected car via links, so may be relevant.
Models 211, 215, 220, 230, 240
Fig 1: Identifying Fanfare Horns And Airbag Clock Spring Contact, Steering Angle Sensor And Column Module