The rear seats are equipped with head restraints in all the seating positions for the passenger's safety and comfort.
Adjusting the height up and down (if equipped)
To raise the head restraint:
1. Pull it up to the desired position (1).
To lower the head restraint:
1. Push and hold the release button (2) on the head restraint support.
2. Lower the head restraint to the desired position (3).
Removal/Reinstallation (if equipped)
To remove the head restraint:
1. Raise the head restraint as far as it can go.
2. Press the head restraint release button (1) while pulling the head restraint up (2).
To reinstall the head restraint:
1. Put the head restraint poles into the holes (3) while pressing the release button (1).
2. Adjust the head restraint to the appropriate height.
Hyundai Elantra AD (2016-2020) Service Manual: Troubleshooting
Troubleshooting
•
The battery must be in good condition and fully charged for this troubleshooting.
...
Hyundai Elantra AD (2016-2020) Service Manual: Heater & A/C Control Unit (Manual) Components and Components Location
Components
ConnectorPin NOFunctionConnectorPin NOFunctionA1LowB18ILL- (RHEO)2Common19Sensor ground3Ground20Ground4Middle Low21Battery (+)5Middle High22ISG DC6High23ISG B+B1IGN224ILL+ (TAIL)2PAB IGN125Sensor REF (+5V)3HTD (Rear defog indicator)26EVAP sensor (+)4Detent Out (-)27AMB sensor (+)5PTC ...