Abstract: An apparatus for controlling air pressure of an onboard air support system of a vehicle comprising a pump connected to the air support for supplying or discharging the air to or from the air support, a pressure sensor in association with the air support for detecting the pressure thereof, a memory for storing present pressure values for the air support, a controller for generating pump operation control data on the basis of data derived from the detection output of the pressure sensor and data of the preset pressure value stored in the memory means, and a timer for determining the period during which the pump is to be operated on the basis of control data available from the controller, and producing a control signal supplied to said pump.

Abstract: A seat control apparatus for adjusting a seat mounted on a vehicle by moving various parts constituting the seat comprises a switch provided on the vehicle for detecting whether a door positioned adjacent to the seat is opened or closed and a controller for producing control signals in dependence on the output of the switch. When an opened state of the door is detected, control for rotating the seat is allowed. Upon detection of the closed state of the door, the control for rotating the seat is inhibited.