Immobilizer Antenna Unit (IAU)

Courtesy of VOLVO CARS CORPORATION

The Immobilizer Antenna Unit (IAU) and its connected starter button and key switch are used by the driver to start the vehicle.

The starter button supplies the Engine Control Module (ECM) with start signals through a directly connected cable.

For more information about the components and signals, see IMMOBILIZER/START INHIBITION and CENTRAL ELECTRONIC MODULE (CEM) .