220 589 00 99 38 Adapter cable - WS54.00-P-0050-38B
WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2016 Mercedes-Benz E63 S AMG, 2016 Mercedes-Benz E400, 2016 Mercedes-Benz E350, 2016 Mercedes-Benz E300, and 2016 Mercedes-Benz E250. However, it is still accessible from the selected car via links, so may be relevant.
MODEL 216, 221, 204
FG54/Set B
Use:
2-pin adapter cable for voltage and resistance measurement and checking of signals at voltage distributor of CAN bus for powerplant, telematics, vehicle dynamics, suspension, interior and central area.