Hyundai Sonata: Immobilizer System / Antenna Coil Repair procedures

Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
3.
Disconnect the 6P connector (B) of the coil antenna and then remove the coil antenna (A) after loosening the screw.

Installation
1.
Install the coil antenna and connect the 6P connector.
2.
Install the crash pad lower panel.
3.
Connect the negative (-) battery terminal.
Immobilizer Control Unit Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the driver crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel") 3. Remove the knee airbag module. (Refer to ...

Ignition Switch Assembly
...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: License Lamps Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the trunk lid panel. (Refer to Body - "Trunk Lid Trim") 3. Remove the license lamp after disengaging the license lamp mounting clip (A). 4. Remove the license lamp assembly after disconnect the license connector (A). ...

Hyundai Sonata LF 2014-2019 Service Manual: Instrument Cluster Components and Components Location
Components Connector Pin Information NoDescriptionNoDescription1-21Speaker (+)2Illumination (-)22Speaker (+)3Rheostat switch (Down)_Input23Immobilizer_Input4Rheostat switch (Up)_Input24AT ('P' Position)5-25AT ('R' Position)6Oil press switch_Input26AT ('N' Position)7Washer level (Low signal)_Inpu ...

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