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: Schematic Diagrams
System Block Diagram
Component Parts And Function Outline
Component partFunctionVehicle-speed sensor, ESP/ABS Control ModuleConverts vehicle speed to pulse.ECMReceives signals from sensor and control switches.Cruise control indicatorIlluminate when CRUISE main switch is ON (Built into cluster)Cr ...
Hyundai Elantra AD (2016-2020) Owners Manual: Wireless Cellular Phone Charging System
[A]: Indicator light, [B]: Charging pad
On certain models, the vehicle comes equipped with a wireless cellular phone
charger.
The system is available when all doors are closed, and when the ignition switch
is ON.
To charge a cellular phone
The wireless cellular phone charging system charge ...