Hyundai Elantra: Immobilizer System / 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 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 steering column shroud panel.
3.
Connect the negative (-) battery terminal.
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 u ...

Ignition Switch Assembly. Repair procedures
Repair procedures Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the crash pad lower panel. (Refer to Body - "Crash Pad") 3. Remove the steering column upper & ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Inhibitor Switch Troubleshooting
Fault Diagnosis Fault Diagnosis for Symptom Major Symptom Expected Cause Items to Check and Measures Shift lever inoperableFaulty shift cable tensionAdjust shift cable tension(refer to "Automatic Transaxle System – Inhibitor Switch")Faulty shift cable assembly/connec ...

Hyundai Elantra AD (2016-2020) Owners Manual: Explanation of Scheduled Maintenance Items
Engine Oil and Filter The engine oil and filter should be changed at the intervals specified in the maintenance schedule. If the car is being driven in severe conditions, more frequent oil and filter changes are required. Drive Belts Inspect all drive belts for evidence of cuts, cracks, exces ...

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