Hyundai Tucson: Immobilizer System - Removal
Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Body Electrical System / Immobilizer System / Immobilizer System - Removal
Removal
- Disconnect the negative (-) battery terminal.
- Remove the heater control unit.
(Refer to Heating,Ventilation And Air Conditioning - "Heater Control Unit")
- Loosen the mounting bolt,nut,screw and remove the Integrated Body Control Unit (A).

- Disconnect the connectors and remove the Integrated Body Control Unit (A).

Installation
- Install the Integrated Body Control Unit.
- Install the heater control unit.
- Connect the negative (-) terminal
Removal
- Disconnect the negative (-) battery terminal.
- Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
- Disconnect the 6P connector (B) of the coil antenna and then remove the coil antenna (A) after loosening the screw.

Installation
- Install the coil antenna and connect the 6P connector.
- Install the crash pad lower panel.
- Connect the negative (-) battery terminal.
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Auto Lighting Control System
Description
It's a system that uses illumination sensor to automatically turn ON the tail
lamp and head lamp based
on the change in surrounding environment's illumination condition. It activates
when the vehicle enters/
exits tunnel, o
Auto Head Lamp Leveling Device
Component Location
Head lamp leveling actuator (Inside head lamps)
Head lamp leveling switch
Removal
Disconnect the negative (-) battery terminal.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel&q
Button Engine Start System
Description
The System offers the following features :
Changing the state of engine ignition and power by using the start
button.
Controlling external relays for ACC / IGN1 / IGN2 terminal switching and
STARTER, without use of mechanical
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Smart Cruise Control Operation
Operating conditions
Smart Cruise Control will operate when
the following conditions are satisfied.
Basic function
The gear is in D (Drive)
The driver's door is closed
EPB (Electronic Parking Brake) is not
applied
Your vehicle speed is within
Differential Carrier Assembly- Installation
Installation
Install the differential carrier bracket (A).
Install the jack and intall the differential carrier assembly (A).
Tightening torque :
68.6 - 88.3 N m (7.0 - 9.0 kgf m , 50.6 - 65.1 lb ft)
Install the coupling ass
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual