Unidad de control del motor OEM BMW Siemens DME MS43 E39 01-03 E46 01-05 E53 Z3 01-02
It functions as the central computer managing engine performance, ignition, and fuel injection. X5 (E53): 3.0i models from 2001–2002. 5 Series (E39): 525i and 530i models from 2001–2003. 3 Series (E46): 325i and 330i models from 2001–2005.