Master Warning Light

This indicator light illuminates
• When there is a malfunction in operation in any of the following systems:
- Exterior lamp malfunction
- Blind-Spot Collision Warning (BCW) malfunction (if equipped)
- Lane Keeping Assist (LKA) System malfunction (if equipped)
- Tire Pressure Monitoring System (TPMS)
- Service reminder
To identify the details of the warning, look at the LCD display.
Door Ajar Warning Light (for conventional cluster)

This warning light illuminates:
• When a door is not closed securely.
Trunk Open Warning Light (for conventional cluster)

This warning light illuminates:
• When the trunk is not closed securely.
Hood Open Warning Light (for conventional cluster)

This warning light illuminates:
• When the hood is not closed securely.
Headlight Warning Light, LED Headlight Warning Light
Icy Road Warning Light, Electronic Stability Control (ESC) Indicator LightHyundai Elantra AD (2016-2020) Service Manual: Engine Coolant Temperature Sensor (ECTS) Specifications
Specification
TemperatureResistance (k?)°C°F-40-4048.14-20-414.13 ~ 16.830325.7920682.31 ~ 2.59401041.15601400.59801760.32
...
Hyundai Elantra AD (2016-2020) Service Manual: Variable Intake Solenoid(VIS) Actuator Repair procedures
Removal and Installation
1.
Disconnect the vacuum hose (A).
2.
Remove the variable Intake solenoid (VIS) actuator connector (B) and actuator (C).
Tightening torque :
9.8 ~ 11.8N.m (1.0 ~ 1.2kgf.m, 7.2 ~ 8.7lb-ft)
3.
Install in the reverse order of removal. ...