HYUNDAI MOBIS IBU-4E14 ECU Smart Key

Product Information

The SMART KEY ECU is a part of the START-STOP BUTTON SYSTEM. It is responsible for outputting the LF (125kHz) signal when the button of the door handle or SSB (Start-Stop Button) is pressed. The LF signal is used for engine start, door lock/unlock, and trunk release. The SMART KEY ECU operates at a voltage range of 9V to 16V and has a dark current of 5mA max. It operates at a frequency of 125kHz and uses ASK (Amplitude Shift Keying) modulation. The ECU has a coil antenna (Tx) and PCB pattern antenna (Rx) for signal reception.

• Telegram message
  The SMART KEY ECU uses a telegram message to communicate with the Fob (key). The telegram consists of different frames with specific bit sizes. The frames include Preamble, Synchronization, Wake UP ID, DATA, LF_CMD, VID, SP BIT, CRC, Rssi_Meas_Num, and more.

• FCC/ISED Notice
  This device complies with part 15 of the FCC Rules. It must not cause harmful interference and must accept any interference received. Any changes or modifications to this device not approved by the manufacturer may void the authority to operate this equipment. This device also complies with FCC radiation exposure limits. It should not be collocated or operated with any other antenna or transmitter without authorization from the FCC. Additionally, it contains license-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s license-exempt RSS(s).

Product Usage Instructions

1. To start the engine:
   • Press the SSB button on the SMART KEY ECU or the button on the door handle to output the LF signal.
   • The SMART KEY ECU will output the LF signal through the interior LF antenna for Fob searching.
2. To lock/unlock the doors and release the trunk:
   • Press the button on the door handle or trunk to output the LF signal.
   • The SMART KEY ECU will output the LF signal through the exterior LF antenna for Fob searching.

Note: Ensure that the operating voltage is within the range of 9V to 16V and that the SMART KEY ECU is installed properly. Refer to the user manual for detailed installation instructions.

Outline of SMART KEY ECU

The SMART KEY ECU is a part of the START-STOP BUTTON SYSTEM. It is possible to output the LF(125kHz) signal by pushing the button of the door handle and SSB .

Description of SMART KEY ECU

GENERAL DISCRIPTION

• * If the button of door handle or SSB button is pressed, SMART KEY ECU the LF(125kHz) signal.

1. LF signal output for engine start
   SSB button is pressed, SMART KEY ECU output LF signal through the interior LF antenna for Fob searching.

2. LF signal output for door lock/unlock and trunk release
   The button of door handle or trunk is pressed, SMART KEY ECU output LF signal thtough the exterior LF antenna for Fob searching

ELECTRICAL CHARACTERISTICS

• model name SMART KEY ECU
• Operating voltage 9V ~ 16V
• Dark current 5mA Max.
• Operating frequency 125KHz
• Modulation ASK
• Operating temperature -30℃ ~ +75℃
• Antenna Type Coil Antenna (Tx), PCB Pattern Antenna (Rx)

MESSAGE TELEGRAM

CONFIRMING EXISTENCE

Field Definition

• Wake UP ID

  • When this ID is matched, the Fob wakes up and processes the LF message.

• First DATA
  

  • fixed to “0”.

• LF CMD

  • The command types of LF message.
  • “001”： Confirming existence
  • “011”： Checking position and ID

• VID

  • Vehicle IDentifier.

• SP BIT

  • Special Bits; these bits specify the Confirming existence of Key LF’s response type.

• TID

  • Token IDentifier which indexes Fob.

• Challenge

  • 32-bit random number.

• Encrypted Password

  • Password.

• CRC

  • CRC data of 2bit.

• Rssi_Meas_Num

  • Antenna number.

FCC

FCC/ISED NOTICE
[FCC]
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.

Caution: Any changes or modifications to this device not explicitly approved by the manufacturer could avoid your authority to operate this equipment. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be collocated or operating in conjunction with any other antenna or transmitter unless authorized to do so by the FCC  This equipment complies with ISED radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be collocated or operating in conjunction with any other antenna or transmitter unless authorized to do so by the ISED

Note
This device is used at least 10 cm away from the body.

• 80-9, MABOOK-RI,

• GUSEONG-UP,
• YONGIN-SHI,
• GYUNGGI,
• 449-910,KOREA
• 1620336@mobis.co.kr.
• SMART KEY ECU ( IBU-4E14 )

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