Smart Key

The SMK manages all functions related to:

• "Start Stop Button (SSB) monitoring",
• "Immobilizer communication" (with Vehicle Control Unit for immobilizer release),
• "ESCL control",
• "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 1: 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 integrated for ESCL/Terminal switching Operations".

It collects information about vehicle status from other modules (e.g. vehicle speed, alarm status, driver door open, etc.), reads the inputs (e.g. SSB, Lock Button and PARK position Switch), controls the outputs (e.g. exterior and interior antennas), and communicates with other 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.