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: Front Seat Back Cover Components and Components Location
Component Location
1. Front seat back cover
...
Hyundai Elantra AD (2016-2020) Owners Manual: What to Expect After an Air Bag Inflates
After a frontal or side air bag inflates, it will deflate very quickly. Air bag
inflation will not prevent the driver from seeing out of the windshield or being
able to steer. Curtain air bags may remain partially inflated for some time after
they deploy.
WARNING
After an air bag inflates, t ...