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: Audio Remote Control Schematic Diagrams
Circuit Diagram
[Audio + B/Tooth + Voice]
[Trip]
[Trip / Cruise]
[Trip / Cruise/ Smart Cruise] ...
Hyundai Elantra AD (2016-2020) Service Manual: Rear Door Outside Handle Repair procedures
Replacement
1.
Remove the plug hole (B).
2.
After loosening the mounting bolt, remove the front door lock (A).
Tightening torque :
7.8 ~ 10.8 N.m (0.8 ~ 1.1 kgf.m, 5.8 ~ 8.0 lb-ft)
3.
Remove the rear door outside handle (A) by pushing it in the direction of arrow.
4.
To intall, ...