Engine management for the phaeton w12 engine design and function self-study programme 250 service. 2 s250_096 the motronic engine management system for the a two-control unit concept is used in the w12 engine. this concept regards the two cylinder banks as two separate engines. essentially, each. Is in the interior where the phaeton units by itself separate. 2004 volkswagen phaeton interior and redesign 2004 volkswagen phaeton driving we drove both the v8- and w12-driven phaetons, …. Volkswagen group w12 engine from the volkswagen phaeton w12 at the 2001 tokyo motor show , volkswagen group showcased a prototype volkswagen nard