Make this adjustment before you start driving and while the day/night lever is in the day position.
Pull the day/night lever towards you to reduce glare from the headlights of the vehicles behind you during night driving.
Remember that you lose some rearview clarity in the night position.
Hyundai Elantra AD (2016-2020) Owners Manual: Maintenance Under Severe Usage Conditions
The following items must be serviced more frequently on cars normally used under
severe driving conditions. Refer to the chart below for the appropriate maintenance
intervals.
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
Severe Driving Conditions ...
Hyundai Elantra AD (2016-2020) Owners Manual: Seat Warmers
Front seat warmers (if equipped)
Seat warmers are provided to warm the seats during cold weather.
WARNING
The seat warmers can cause a SERIOUS BURN, even at low temperatures and especially
if used for long periods of time. Passengers must be able to feel if the seat is
becoming too warm so th ...