Lighting control
To operate the lights, turn the knob at the end of the control lever to one of the following positions:

1. OFF position
2. AUTO headlamp position (if equipped)
3. Parking lamp position
4. Headlamp position
Daytime running light (DRL)
The Daytime Running Lights (DRL) can make it easier for others to see the front of your vehicle during the day, especially after dawn and before sunset.
The DRL system will turn the dedicated lamp OFF when :

AUTO light position (if equipped)
The parking lamp and headlamp will be turned ON or OFF automatically depending on the amount of light outside the vehicle.
Even with the AUTO light feature in operation, it is recommended to manually turn ON the lamps when driving at night or in a fog, driving in the rain, or when you enter dark areas, such as tunnels and parking facilities.
NOTICE

Parking lamp position (
)
The parking lamp, license plate lamp and instrument panel lamp are turned ON.

Headlamp position (
)
The headlamp, parking lamp, license plate lamp and instrument panel lamp are turned ON.
Information
The ignition switch must be in the ON position to turn on the headlamp.
Light
High beam operationHyundai Elantra AD (2016-2020) Service Manual: Stop Lamp Switch Components and Components Location
Components
1. Stop lamp switch2. Brake pedal member assembly3. Return spring4. Bolt5. Brake pedal arm assembly
...
Hyundai Elantra AD (2016-2020) Service Manual: Cowl Top Cover
Components and Components Location
Component Location
1. Cowl top cover
Repair procedures
Replacement
1.
Remove the plug hole.
2.
Loosen the mounting nuts and remove the wiper arm (A).
Tightening torque :
22.6 ~ 26.5 N.m (2.3 ~ 2.7 kgf.m, 16.6 ~ 19.5 lb-ft)
3.
Using a scre ...