Adjusting instrument cluster illumination

When the vehicle's parking lights or headlights are on, press the illumination control button to adjust the brightness of the instrument panel illumination.
When pressing the illumination control button, the interior switch illumination intensity is also adjusted.
WARNING
Never adjust the instrument cluster while driving. Doing so could lead to driver distraction which may cause an accident and lead to vehicle damage, serious injury, or death.

Instrument Cluster
GaugesHyundai Elantra AD (2016-2020) Service Manual: Temperature Control Actuator Description and Operation
Description
The temperature control actuator is located at the heater unit. It regulates the temperature by the procedure as follows.
The signal from the control unit adjusts the position of the
temperature door by operating the temperature switch. Then the
temperature will be regulated by ...
Hyundai Elantra AD (2016-2020) Service Manual: Front Strut Assembly Components and Components Location
Components
1. Strut assembly2. Lock nut3. Insulator 4. Strut bearing & Spring upper pad5. Bumper rubber6. Dust cover7. Coli spring8. Spring lower pad
...