Hyundai Tucson: Body Control Module Controls The Followings

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Body Electrical System / Integrated Body Control Unit (IBU) / Body Control Module Controls The Followings


Body Control Module Controls The Followings

  • Wiper & Washer Control
  • Defroster Control
  • Driving Control
  • Tailgate Control
  • Window Control
  • Interior Control
  • Exterior Control
  • Panic alarm Control
  • MTS
  • Flasher output Control
  • Door lock/unlock Control
  • Burglar alarm Control
  • Remote start Control
  • UMS(User Mode Setting) Control
  • Gateway/ Diagnosis

Integrated Body Control Unit (IBU)

Integrated body control unit has integrated several functions including body control module (IBU), smart key unit (SMK), and tire pressure monitoring system (TPMS).

  1. Body Control Module (IBU) Functions
  1. Smart Key Unit (SMK) FunctionsTire Pressure Monitoring System (TPMS) FunctionsTire Pressure Monitoring System (TPMS) Functions
  2. Tire Pressure Monitoring System (TPMS) Functions

Tire pressure monitoring system continuously monitors pressure and temperature inside the tire in order to warn the driver of the changes in tire pressure that may have influence on vehicle driving conditions. TPMS control module analyzes the data from the WE (Wheel Electronic) sensor attached inside each wheel and determines the tire conditions and generates a signal that is necessary for warning lamp control.


With Smart Key

Connector Pin Information

Without Smart Key

Without Smart Key

Connector Pin Information





  1. Disconnect the negative (-) battery terminal.
  2. Remove the heater control unit.

    (Refer to Heating, Ventilation And Air Conditioning - "Heater Control Unit")

  3. Remove the IBU (A) after loosening mounting bolt, nut and screw.

  1. Disconnect IBU connectors and then remove the IBU (A).



  1. Install the IBU and connect the connector.
  2. Install the heater control unit.
  3. Install the negative (-) battery terminal.


     IBU Diagnosis With Diagnostic Tool

    In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system. (1) Fault Code Searching : Checking failure and code number (DTC) (2) Data Analysis : Checking the system input/output data state (3) A

     IMS (Integrated Memory)

    Description The optimal seat position set by the driver is memorized into the power seat unit by using IMS switch. In case of the position change, the seat can restore its preset position by IMS switch. It has safety functions of restoring

     Fuel Filler Door

    Component Location Fuel filler door release actuator Inspection Disconnect the negative (-) battery terminal. Remove the fuel filler housing after opening the fuel filler door. (Refer to Body - "Fuel Filler Door") Dis


      Exhaust Emission Control System - Description

    Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components. Modifications to the combustion chamber, intake manifold, camshaft and ignition system consist the basic

     Engine Start/Stop button

    Whenever the front door is opened, the Engine Start/Stop button will illuminate and will go off 30 seconds after the door is closed. WARNING To turn the vehicle off in an emergency: Press and hold the Engine Start/Stop button for more than