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: Description and Operation
Description • Automatic transaxle system relies on various measurement data to determine the current control status and extrapolate the necessary compensation values. • These values are used to control the actuators and achieve the desired control output. • If a problem ...

Hyundai Elantra AD (2016-2020) Service Manual: Relay Box (Engine Compartment) Repair procedures
Inspection 1. Disconnect the negative (-) battery terminal. 2. Pull out the relay from the engine compartment relay block. Power Relay (Type A) Check for continuity between the terminals. 1. After supplying power to between No. 85 and 86 power relay terminals, check that there is co ...

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