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) Service Manual: Temperature Control Actuator Specifications
Specifications
Door PositionVoltage (V)Error DetectingMax. cooling0.3 ± 0.15 Low voltage : 0.1V or less High voltage : 4.9V or moreMax. heating4.7 ± 0.15
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Hyundai Elantra AD (2016-2020) Service Manual: General Information
General Information
The supplemental restraint system (SRS) is designed to
supplement the seat belt to help reduce the risk or severity of injury
to the driver and passenger by activating and deploying the driver,
passenger, side airbag and belt pretensioner in certain frontal or side
col ...