Abstract: A control unit for an electrically retractable door mirror 10, including: a motor M1 to drive rotationally a door mirror to a stored position or a normal position; a change-over switch SW1; and a first and second control circuits 11 and 12, wherein the first and second control circuits 11 and 12 include electronic switches 14 and 17 respectively which are capable of switching on/off depending on the polarity of an electrical signal switched by the change-over switch SW1, excess current detecting means 15 and 18 whose electrical resistances grow with an increase in a current and which are connected to the electronic switches 14 and 17 in series respectively, and shutoff switches 16 and 19 which switch off the electronic switches 14 and 17 respectively when a voltage generated in the excess current detecting means 15 and 18 exceeds a predetermined value.