Automatic Ventilation (if equipped)
When the ignition switch is in the ON position or when the engine is running and temperature is below 59°F (15°C) with the recirculated air position selected more than five minutes, the air intake position will automatically change to the outside (fresh) air position.
To cancel or reset the Automatic Ventilation
When the air conditioning system is on, select Face Level
mode and while pressing the A/C button,
press the recirculated air position button five times within three seconds.
Sunroof Inside Air Recirculation (if equipped)
When the heater or air conditioning system is on with the sunroof opened, the outside (fresh) air position will be automatically selected. At this time, if you press the recirculated air position button, the recirculated air position will be selected but will change back to the outside (fresh) air position after 3 minutes.
When the sunroof is closed, the air intake position will return to the original position that was selected.
Hyundai Elantra AD (2016-2020) Owners Manual: Indicator lights
When the ignition switch is placed to the ON position, the ESC indicator light
illuminates, then goes off if the ESC system is operating normally.
The ESC indicator light blinks whenever the ESC is operating.
If ESC indicator light stays on, your vehicle may have a malfunction with the
ESC s ...
Hyundai Elantra AD (2016-2020) Service Manual: Seat Belt Pretensioner (BPT) Repair procedures
Removal
1.
Disconnect the battery negative cable, and wait for at least three minutes before beginning work.
2.
Separate the front seat belt (A) from the emergency fastening device.
3.
Remove the door scuff trim.
(Refer to Body - "Interior Trim")
4.
Remove the center pillar trim.
...