Immobilizer Antenna Unit
The Immobilizer Antenna Unit (IAU) is installed on the inside of the steering column lower shroud and secured with a screw.
The IAU is used if the Remote Function Actuator (RFA) is unable to authorize the smart key. If the RFA is unable to identify the smart key, the transponder within the smart key cannot be read in the conventional manner. The driver will be alerted to this by a chime and the following message in the Instrument Cluster (IC) message center: 'Smart Key Not Recognized - Reposition Or Place As Shown And Press Start Button'.
The transponder within the smart key can then be read by the IAU. Refer to KEYLESS START BACKUP