Hyundai Tucson: Smart Key System

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Body Electrical System / Smart Key System

Component Location (1)

  1. Integrated body control unit (IBU)
  2. Interior antenna 2
  3. Door outside handle
  4. Interior antenna 1
  5. Front antenna
  6. Buzzer
  7. Door antenna

Component Location (2)

  1. Tailgate antenna
  2. Rear bumper antenna
  3. Tailgate open switch


Smart Key Unit (IBU)

Smart Key (FOB Key)

Smart Key (FOB Key)



Smart Key System - Inspection


 Smart Key System - Inspection

Self Diagnosis With Scan Tool It will be able to diagnose defects of SMART KEY system with diagnostic tool quickly, diagnostic tool can operates actuator forcefully, input/output value monitoring and self diagnosis. The following three feature

 Smart Key Code Saving

Smart Connect the DLC cable of diagnostic tool to the data link connector (16 pins) in driver side crash pad lower panel, turn the power on diagnostic tool. Select the 'S/W Management' and 'Car model'. Select the

 Interior  Antenna

Interior 1 Antenna Take care not to scratch the crash pad and related parts. Disconnect the negative (-) battery terminal. Remove the ecall unit. (Refer to Emergency Call system - "Emergency Call (eCall) Unit") Remove the inter


 Good driving practices

Never move the shift button from P (Park) or N (Neutral) to any other position with the accelerator pedal depressed. Never move the shift lever/button into P (Park) when the vehicle is in motion. Be sure the vehicle is completely sto

 Electronic Parking Brake (EPB)

Applying the parking brake To apply EPB (Electronic Parking Brake): Depress and hold the brake pedal. Pull up the EPB switch. Make sure the Parking Brake warning light comes on. EPB (Electronic Parking Brake) may be automatically app