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: Electric Thermostat (ECT) Description and Operation
Description and Operation
Electric Thermostat (ECT)
Overview
Optimal control of coolant temperature depending on the driving conditions
Operation Principle
Electric Thermostat Structure
...
Hyundai Elantra AD (2016-2020) Service Manual: Troubleshooting
Troubleshooting
Trouble SymptomCause of the symptomRemedyExcessive play in steeringLoose U-joint boltRetighten or replace as necessaryLoose yoke plugRetightenLoose steering gear mounting boltsRetightenLoose or worn tie rod endRetighten or replace as necessarySteering wheel does not return to i ...