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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Charging System - Cleaning
Make sure that the ignition switch and all accessories are in the OFF
position.
Disconnect the battery cables (negative first).
Remove the battery from the vehicle.
WARNING
Care should be taken in the event the battery case is cracked o
ICU (Integrated Central Control Unit)
Dscription and Operation
ICU (Integrated Central Control Unit) is an integrated model of smart
junction block and central gateway.
It performs the function of conventional "Smart junction block" and the function
of communication med
Information
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