Hyundai Tucson: Smart Key System
Component Location (1)

- Integrated body control unit (IBU)
- Interior antenna 2
- Door outside handle
- Interior antenna 1
- Front antenna
- Buzzer
- Door antenna
Component Location (2)


- Tailgate antenna
- Rear bumper antenna
- Tailgate open switch
Specifications
Smart Key Unit (IBU)

Smart Key (FOB Key)

Antenna


- Smart Key System - Inspection
- Smart Key Code Saving
- Interior Antenna
- Exterior Bumper Antenna
- Door Outside Handle
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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
SEE MORE:
EGR Temperature Sensor
Description
EGR temperature sensor is used for temperature measurement and EGR bypass
valve function
diagnosis as well as thermal protection of EGR system.
Specification
Type : Thermistor type
Circuit Diagram
Harness Connecto
48V Battery System - Removal
Turn the ignition switch OFF and disconnect the battery (-) terminal.
Remove the luggage board (A).
Disconnect the BMS ECU extension wiring harness connector (A).
Disconnect the inverter power cables (A).
Tightening torque
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual