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) Service Manual: PTC Heater Repair procedures
Inspection Operating Logic Test (Manual only) Inspect the PTC operation by confirmation logic as follows. 1. Entering (1) Set the Floor mode and maximum heating position. (2) Turn off the blower switch. (3) Press the intake (recirculation) button 5 times or more. (4) \Indicators ...

Hyundai Elantra AD (2016-2020) Service Manual: Repair procedures
Operation and Leakage Check Check all of the following items: ComponentProcedureBrake Booster (A)Check brake operation by applying the brakes during a test drive. If the brakes do not work properly, check the brake booster. Replace the brake booster as an assembly if it does not work properl ...