Hyundai Elantra: Immobilizer System / Immobilizer Control Unit Repair procedures

Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the main crash pad assembly.
(Refer to Body - "Main Crash Pad Assembly")
3.
Discnnect the connector of the immobilizer unit and then remove the immobilizer unit (A) after loosening a nut.

Installation
1.
Install the immobilizer control unit after connecting the unit connector.
2.
Install the main crash pad assembly.
3.
Connect the negative (-) battery terminal.
Repair procedures
Teaching Procedures 1. Key Teaching Procedure Key teaching must be done after replacing a defective PCM(ECM) or when providing additional keys to the vehicle owner. The procedure starts with a ...

Antenna Coil Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the steering column shroud panel. (Refer to Body - "Steering Column Shroud Panel") 3. Disconnect the 6P connector (B) of ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Specifications
Specifications Smart Key Unit ItemsSpecificationRated voltageDC 12VOperating voltageDC 9 ~ 16VOperating temperature-22°F ~ 167°F (-30°C ~ 75°C)LoadMax. 4mA (When welcome light function off) RF Receiver ItemsSpecificationFrequency433.92 MhzAntenna typeFSK (Frequency Shift Keying) Smart ...

Hyundai Elantra AD (2016-2020) Service Manual: Power Window Switch Schematic Diagrams
Circuit Diagram Driver Power Window Switch [Driver Power Window Switch (Safety)] [Driver Power Window Switch (Auto Down)] Assist Power Window Switch Rear Power Window Switch [Rear Power Window Switch (Manual)] [Rear Power Window Switch (Manual + Seat Heater)] ...

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