

Air bag warning labels, required by the U.S. National Highway Traffic Safety Administration (NHTSA), are attached to alert the driver and passengers of potential risks of the air bag system. Be sure to read all of the information about the air bags that are installed on your vehicle in this Owners Manual.
Additional Safety PrecautionsHyundai Elantra AD (2016-2020) Owners Manual: Headlight Warning Light, LED Headlight Warning Light
Headlight Warning Light
This warning light illuminates:
This warning light illuminates if one of the exterior bulbs (headlamp, DRL, turn
signal lamp, stop lamp, etc.) is not operating properly. One of the bulbs may need
to be replaced. If the vehicle is equipped with LED headlamps, have the ...
Hyundai Elantra AD (2016-2020) Service Manual: Output Speed Sensor Description and Operation
Description
The output speed sensor is a vital unit that measures the
rate of rotation of the transaxle's turbine shaft and output shaft, and
delivers the readings to the TCM. The sensor provides critical input
data that's used in feedback control, damper clutch control, gear
setting co ...