Smart Key

Fig 1: Identifying Smart Key

Courtesy of KIA MOTORS AMERICA, INC.

The SMK manages all function related to:

• "Start Stop Button (SSB) monitoring",
• "Immobilizer communication" (with Engine Management System unit for immobilizer release),
• "Authentication server" (Validity of Transponder and in case of Smart Key option Passive Fob authentication),
• "System consistency monitoring",
• "System diagnosis",
• Control of display message / warning buzzer.
  Fig 2: Smart Key Communication Diagram

  Courtesy of KIA MOTORS AMERICA, INC.

The unit behaves as Master role in the whole system.

In case of SMART KEY application, for example "Passive Access", "Passive Locking" and "Passive Authorization are Terminal switching Operations".

It collects information about vehicle status from other modules (vehicle speed, alarm status, driver door open...), read the inputs (e.g. SSB, Lock Button and PARK position Switch), controls the outputs (e.g. exterior and interior antennas), and communicates with others devices via the CAN network as well as a single line interfaces.

The diagnosis and learning of the components of the BES System are also handled by the SMK.