Hyundai Elantra: Smart Key System / Smart Key Repair procedures

Smart Key
Smart Key Code Saving
1.
Connect the DLC cable of GDS to the data link connector (16 pins) in driver side crash pad lower panel, turn the power on GDS.

2.
Select the vehicle model and then do "Smart Key Code Saving".

3.
After selecting "Smart Key Teaching" menu, push "Enter" key, then the screen will be shown as below.

4.
After having the teaching smart key, push "Enter" key.
5.
Input the "Pin Code" for first key teaching.

6.
Press the SSB with smart key within 5 sec after pressing "OK".

7.
Confirm the message "First key teaching completed".

8.
Press the SSB with smart key within 5 sec after pressing "OK".

9.
Confirm the message "Second key teaching completed".

10.
Then the screen will be shown as below when key teaching process is completed.

Description and Operation
Description The SMART KEY system is a system that allows the user to access and operate a vehicle in a very convenient way. To access the vehicle, no traditional key or remote control unit is n ...

Smart Key Unit Components and Components Location
Components (1) NoConnector AConnector BConnector C1BAT (+)_SignalDriver's door antenna_GND-2BAT (+)_PowerDriver's door antenna_Power-3IGN 1--4IGN 2_Relay outputB-CAN (High)SSB LED (OFF)5IGN 1_Rel ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Photo Sensor Description and Operation
Description The photo sensor is located at the center of the defrost nozzles. The photo sensor contains a photovoltaic (sensitive to sunlight) diode. The solar radiation received by its light receiving portion, generates an electromotive force in proportion to the amount of radiation rece ...

Hyundai Elantra AD (2016-2020) Service Manual: Ambient Temperature Sensor Description and Operation
Description The ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperature. The sensor output will be used for discharge tem ...

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