Vehicle electronic system

摘要

A projection (41) protrudes downward from the lower side edge portion of a third electronic control unit (40). The projection forms a recess which houses a first electronic control unit (20) under the third electronic control unit (40) and has a lower opening. The third electronic control unit (40) and a control panel (10) are electrically connected to each other via connectors (13, 43). A second electronic control unit (30) is placed on the upper surface of the third electronic control unit (40), and the first and third electronic control units (20, 40) and the second and third electronic control units (30, 40) are respectively detachably connected to each other via connectors. <IMAGE>