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) Owners Manual: Air Cleaner
Filter Replacement
â– 1.6 T-GDI
â– 2.0 MPI
The air cleaner filter can be cleaned for inspection using compressed air.
Do not attempt to wash or to rinse it, as water will damage the filter.
If soiled, the air cleaner filter must be replaced.
1. Loosen the air cleaner cover attaching cl ...
Hyundai Elantra AD (2016-2020) Service Manual: In-car Sensor Description and Operation
Description
The In-car air temperature sensor is built in the heater & A/C control unit.
The sensor contains a thermistor which measures the
temperature of the inside. The signal decided by the resistance value
which changes in accordance with perceived inside temperature, is
delivered ...