WARNING: This page is about a different car, the 2009 Mercedes-Benz E350 and 2008 Mercedes-Benz E350. However, it is still accessible from the selected car via links, so may be relevant.
FG 42/Set B
MODELS 211, 230, 240
Use/specification:
47-pin test cable for diagnosis of the SBC control module (T
Sensortronic T
rake C
Control in conjunction with the socket box 129 589 00 21 00.