SpecificationsHyundai Elantra AD (2016-2020) Service Manual: Variable Intake Solenoid (VIS) Valve Description and Operation
Description
Variable Intake manifold Solenoid (VIS) valve is installed on
the intake manifold. The VIS valve controls the vacuum modulator which
activates a valve in the intake manifold. The ECM opens or closes this
valve according to engine condition (Refer to below table).
Engine cond ...
Hyundai 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 ...