When you move the shift lever to the R (Reverse) position, the side view mirror(s) will rotate downwards to aid with driving in reverse. The position of the side view mirror switch (1) determines whether or not the mirrors will move:
Left/Right : When either the L (Left) or R (Right) switch is selected, both side view mirrors will move.
Neutral : When neither switch is selected, the side view mirrors will not move.
The side view mirrors will automatically revert to their original positions if any of the following occur:
Hyundai Elantra AD (2016-2020) Service Manual: A/C Pressure Transducer Description and Operation
Description
The A/C Pressure Transducer (APT) converts the pressure value
of high pressure line into voltage value after measuring it. By
converted voltage value, engine ECU controls the cooling fan by
operating it high speed or low speed. Engine ECU stops the operation of
the compressor ...
Hyundai Elantra AD (2016-2020) Service Manual: Sunroof Glass Components and Components Location
Components Location
1. Sunroof glass
...