To use a sunvisor, pull it downward. To use a sunvisor for a side window, pull it downward, unsnap it from the bracket (1) and swing it to the side (2).
To use the vanity mirror, pull down the sunvisor and slide the mirror cover (3).
Adjust the sunvisor forward or backward (4) as needed. Use the ticket holder (5) to hold tickets (if equipped).
Close the vanity mirror cover securely and return the sunvisor to its original position after use.
WARNING
For your safety, do not block your view when using the sunvisor.
NOTICE
Do not put several tickets in the ticket holder at one time. This could cause damage to the ticket holder.
Hyundai Elantra AD (2016-2020) Service Manual: Front Door Latch Components and Components Location
Component Location
1. Front door latch
...
Hyundai Elantra AD (2016-2020) Service Manual: Knock Sensor (KS) Description and Operation
Description
Knocking is a phenomenon characterized by undesirable
vibration and noise and can cause engine damage. Knock Sensor (KS) is
installed on the cylinder block and senses engine knocking.
When knocking occurs, the vibration from the cylinder block
is applied as pressure to the piez ...