Hyundai Elantra: Immobilizer System / Immobilizer Control Unit Repair procedures

Hyundai Elantra AD (2016-2020) Service Manual / Body Electrical System / 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) Owners Manual: Immobilizer System
The immobilizer system protects your vehicle from theft. If an improperly coded key (or other device) is used, the engine's fuel system is disabled. When the ignition switch is placed in the ON position, the immobilizer system indicator should come on briefly, then go off. If the indicator ...

Hyundai Elantra AD (2016-2020) Service Manual: Side Impact Sensor (SIS) Repair procedures
Removal Pressure Side Impact Sensor • Removal of the airbag must be performed according to the precautions/procedures described previously. • Before disconnecting the side impact sensor connector(s), disconnect the side airbag connector(s). • Do not tur ...