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: Components and Components Location
Component Location Index
Engine Room
1. Expansion valve2. Service port (Low pressure)3. Service port (High pressure)4. A/C Pressure transducer (APT)5. Compressor6. Discharge hose 7. Suction & Liquid tube assembly8. Condenser9. Ambient temperature sensor
[Interior]
1. Auto defogging s ...
Hyundai Elantra AD (2016-2020) Service Manual: Battery Specifications
Specifications
?AGM60L-DIN
ItemSpecificationModel typeAGM60L-DINCapacity [20HR/5HR] (AH)60/48 Cold Cranking Amperage (A)640 (SAE) 512 (EN)Reserve Capacity (Min)100
...