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: Battery Description and Operation
Description
[AGM Battery]
AGM battery is used for especially heavy load on the vehicle
network depending on equipment and requirements. AGM stands for
Absorbent Glass Material Battery; that is absorbent glass fibre fleece.
AGM batteries are fitted in models with electrical loads/consumers ...
Hyundai Elantra AD (2016-2020) Service Manual: Multimedia Jack Description and Operation
Description
The multimedia jack on the console upper cover is for
customers who like to listen to external portable music players like the
MP3 etc., through the vehicle's sound system when it is linked to this
jack. The customer has this added option.
In case of distortions from media conn ...